Great Bike.  Shop around for best price.
584955
This bike is a great buy at $399.  I found it on another site for $399 and they had a 10% off code.  SO I got it at $341 plus free shipping.  Still at $399 it's a great deal.  Caution when assembling.  Some of the parts and bolts will seem missing, but they are already put in the holes.  Also where the neck of the bike handlebar fits into the pedal box, you will have to remove a black protective case.  Three bolts are in there that you will need to remove and replace wfter sliding the bar into it.  Took me about an hour to assble one person.  I rode it for an hour right after and was very happy.
4102367
The Vilano C1 is an excellent comfort hybrid bike at an incredible price.  I bought this bike on Amazon for much cheaper (including paying for assembly at a local bike shop) than other options at Dicks Sporting Goods and Sports Authority.  I highly recommend the Vilano C1  it has exceeded my expectations.  Great looking bike that rides smooth!
753491
This is the best deal in terms of quality I could find for the price. Sure, there are a few cheap items on the bike, like the fork and the steel rear swing arm.. For a small extra investment on a few items like tires, the fork, and a rear shock, you end up with a really nice bike. The brakes, switchgear, wheels, levers, everything like that are on the cheaper side but work well enough. The basic bike is very solid and a good base to build on.
4916770
This is a marvelous bike for the price, and you'd have to spend over twice as much before you'd notice any improvement I think (and then you'd be constantly worrying about something happening to it).

I like that the handlebars allow a more upright riding style for casual trail riding more like a cruiser.

The seat is shockingly comfortable coming from an old cheap mountain bike.

Quite modest weight with its aluminum frame, very sturdy, perfectly at home on good dirt trails as well as pavement of course.

Got mine for $279 before tax from my local Dick's Sporting Goods using one of their frequent one-day-only 20% off deals. Free store assembly and $8 for a kickstand if you want it.

If you're looking for a comfortable hybrid bike you just can't go wrong here for the price. Basic but totally competent and good quality. More comfortable than many much more expensive bikes.

Highly recommended.

G.
4449393
This bike is extremely sturdy and is a nice cross between a mountain bike and road bike. It runs a little on the heavy side but unless you are doing hard core races then it really doesn't matter.

It was a little hard to get setup but anyone can do it. I would recommend however to take it to a bike shop and have them set everything up for you so that they can make sure its put together perfectly. After riding this bike for a month the gears seem to be slipping when I shift so I will be taking it in to have a bike professional adjust everything to where it should be.

Overall for the price this is a great bike with a lot of promise. Just pay the extra 50-75 to have it put together correctly and you will have years of great riding.
162421
Best bike I could find in the price range. I compared to models that averaged around $850 and was pleasantly surprised to find these specs at this $600. I have taken 2 rides so far and love the ride.
219958
I have only had this bike for a few days, but I am so impressed I feel compelled to write a review.
This is  a great bike.  It's very well made and a good value.  I suspect its comparable to bikes costing much more.

The pros are many:
The bike arrived very well packed and in perfect condition.
Its better than I expected and better than advertised.  For example, the frame is aluminum vs steel in the description, and so the bike the motor is 350 watt vs 250 in the description.
The built in lights are bright and one switch operates both front and back.
The Shimano shifter is very smooth and easy to use.
The twist throttle works well and has three power levels.
The bike is easy and fun to ride with or without the battery.  You can pedal unassisted,  twist the throttle and cruise without pedaling or/and use the throttle at the same time.
The handlebars are very adjustable and among the best Ive seen.
The controls are simple and straight froward.

The cons have little to do with the bikes actual quality, and should not deter anyone from buying one.
If you're handy you won't have any trouble assembling this bike, but the assembly manual isn't much help.
Likewise the pictures and descriptions in the owners manual need updating.  For example the battery pack has a little button on the front face under the handle.  When the button is pressed LEDs show the batterys charge level.  This button must also be pressed to start charging the battery.  I had to figure that out myself.
The Amazon description and the owners manual both mention PAS (pedal assist), but the bike lacks this feature.  The motor is operated by the throttle only, pedaling doesnt activate the motor.  I called Yukon Trail (they answered on the third ring and were friendly and professional) and was told that the bikes no longer ship with PAS.  I expected this feature, but  Im not returning the bike because to doesnt have it.  After using the throttle for a while, I doubt that the PAS feature will be missed.
The cover for the controller is not secured, and could fall off and the battery pack and controller rattle a little, but I think these things can be remedied.

All in all Im happy with bike and would recommend it to anyone in the market for an electric bike.

11/8/16 update:
My husband wrote this review.  I am updating this, he loves this bike and rides it every day since his purchase.  The battery is still going strong.  The bike is really a great quality.
3993863
Very nice bike. My daughter loves it, and I would not be afraid to buy it again. The problem with buying bikes online is that you need to know how to assemble and tune a bike, or you need to know someone who does that can help you. Otherwise you will be inevitably be disappointed like so many of the 1 and 2 star reviews of this bike. Complaints about derailleurs, brakes, bent wheels, fenders - these are typical issues that are easily resolved by a decent bike mechanic. If there is one thing I could fault this bike for, its the cheap plastic basket that comes out of the box half deformed; but even that, with some coaxing, can be made to look just like the picture. Long story short, We took the bike to Acadia NP last summer and my daughter worked it hard up and down 30+ miles of hilly carriage roads... the thing looks and rides better and better the more it is used.
1689843
Wow this bike is a great deal. I went to local bike shops to look for a tandem and they all had much more expensive bikes. They were also not as good looking as this bike. The bike came with the front wheel, seats and the handle bars off, so very little assembly was needed. A nice surprise was the kick stand which has a little release button so it is not to hard to kick it in the up position. I added a rear rack which has a detachable basket for those long trips to the park to play basketball or so I can take my camera. The bike is really a eye catcher, everyone we see has a big smile or a nice comment about the bike. If you are looking for a tandem do not hesitate to get this bike.
[...] This is a link to photos of the bike.

[...]
4724140
Purchased 6 weeks ago for a great price.  Came partially assembled but used U tube to set up the 105 gears 11x2 and mount front disc brake.  Overall this is a great bike at a good price.  Very comfortable as it is an endurance model with \700x28 Shimano wheels and Michelin tires. Seat is average comfort, handlebars  should have the shallower drop.  Although all aluminum the bike is not heavy and seems very durable,  attractive paint job. Manual has no technical information.
3191108
I just got this bike a few days ago and I have to say I love it. It was easy to put together and the ride is very smooth. The bike came in great condition without any of the broken features someone posted on here. I'm pretty sure that would have had to be a shipping problem and this one arrived just fine. I am a seasoned spinner and I'm used to using the thousand dollar Keiser M3 Spin bike at the gym. However, this bike for the price is pretty great in comparison. It is sturdy and doesn't move around at it's base at all during the ride. The comment on handlebar moving a bit is true but it's not bothersome since you're moving with the handle bars as you ride. I know some Keiser bikes that did the same thing, too.  The handle bars are comfortable too. I have Rheumatoid Arthritis and I have to have comfortable grips and some spin bikes don't have that. But these handle bars haven't bothered me yet! It comes with a convenient water bottle holder. The seat is a little hard but then again the majority if not all spin bikes have uncomfortable seats. Get some padded bike shorts or a seat cover and you should be fine. I have yet to try and install SPD pedals but I will do so eventually. The stirrups are actually good quality on the factory pedals though. It's not all fabric, it actually has a plastic toe cage. So for someone who doesn't like SPD clip ins or is a novice and prefers toe cage pedals, you will love this. The noise is very, very minimal so that I can watch television while riding and I don't have to turn up the volume on the TV at all. The old Keiser belt tension bikes at the gym made 10x more noise than this one. If someone has a problem with the noise on this bike then I would say they are extremely picky. I think the only bike that could possibly be quieter is the Keiser M3 with the magnetic tension. Adjusting the seat and handle bars isn't too hard. It's a right-y tight-y, left-y loose-y and then pull out mechanism to change the height. It's not terribly difficult and if you're the only one riding, you need only do this once. The design for change in height is a sturdy one, too. Some of the nicer bikes I've ridden have had seats or handle bars that would suddenly collapse because they were tension designed. This one has a hole that accepts a bolt and you can feel how sturdy it is. I doubt I will ever have problems with the seat and handlebars suddenly collapsing.  It doesn't come with a calorie counter or RPM sensor but I plan to buy one separately. I have read other people were able to do that. Overall - 5 stars. You won't be dissatisfied with this purchase.
2708110
My Girlfriend and I purchased this bike for her 19 yr. old (black with red) and he absolutely loves it!  Easy to build, but I do recommend taking the thread less fork & stem apart to re-lube the bearings - it was pretty dry in there.  I did *not* disassemble the hubs or bottom bracket but they felt sufficiently lubed for the quality of the components.  The freewheel hub has some drag when spinning on the repair stand (more than what you would find on a low end shimano hub), but when riding you can't feel the difference.  Re-lubing won't improve it - it is just the quality of the rear hub.  The front hub and bottom bracket spin smooth enough.  Rear brake pads... well... they suck.  They pad material just disintegrates upon use.  Just replace the brake pads with koolstops or whatever is your fave is when you build because you will need to adjust the brakes.  Speaking of brakes they need adjusted and there are plenty of free youtube videos to teach you, but the calipers will need centered, pads aligned to rim and cable slack removed. Then that is pretty much it. Finish by greasing the seat tube and make sure the stem/handlebars are aligned with your front tire and you have built a fun ride.

The gearing works well for a variety of moderate inclines and level roads. Easy to get pedaling while leaving some room to get a decent sustainable speed.

Back to brakes, if you feel you need more stopping power then add a front brake. Any side pull road caliper (center mount) should work with a reach from 39-49mm. (confirmed by an email to Critical Cycles).

During the build, I kind of questioned some things about the bike but once assembled I really enjoyed riding it before handing it over to the intended.  It is a fun bike and should get a lot of mileage.

*Special notes to first time assemblers* The left pedal (as with all bikes) is reverse threaded.  Left is the side with-out gears.  When attaching the pedals you need to be patient and hand thread each pedal before using tools!  This is true regardless if it is a $3000 bike or a $200 bike.  Always lube the pedals with a good quality water resistant grease and wipe the threads on the crank arms (inside the hole where the pedal with screw into) and pedal to make sure there isn't some left over machining bits. If the thread feels rough right at first - STOP! Back out gently and get eye level to insure you are going in straight when installing each pedal.
2602646
Delivery:
The bike came nicely packaged with an excessive amount of padding and cardboard taped to the frame. Takes a few minutes to remove, but was happy that the bike was so protected.  Assembly was straight forward. Just pop on the pedals, screw on the handlebars and adjust the seat and voila!  My model came with a kickstand and bell, so that was a nice touch. I did opt to get the 14 freewheel accessory as I intend to focus on handbraking.  Very nice that it includes a tire and is of equal quality.

Build:
Initial impressions were very good. From the moment you pick up the bike you can tell that this bike is set apart from the rest.  Although it is a small bike, weight is still important.  And this bike is very light.  Not a specific measurement, but Id say its half the weight of a department store bike. Despite being so light, it is also very durable.  Even as an adult, I was able to test it out for a little bit.

Sizing:
I was on the fence whether to order a Woom 2 or 3.  My son is on the small side (41 tall).  He was riding a Strider push bike and had outgrown it. With the Woom 2 seat all the way down, he is easily able to reach the ground while seated.  In this position starting and stopping is easy, but his knees are too bent in this position.  I plan to let him get a little more comfortable starting on his own, then will raise the seat up a bit. Im thinking this size will last about a year or so before I need to upgrade to a Woom 3. But I am happy about the size as it was an easy transition to a pedal bike.  I think the Woom 3 would have been too big for him to start out on.

Features:
The Woom 2 comes standard with almost everything needed. As noted above I did add the freewheel, which has helped out significantly in riding quality.  He is able to properly position his pedals to start out.  Braking is exceptional compared to department store bikes.  While it is only a single speed, he was able to keep up with us due to his speedy pedaling.

Accessories:
A few recommended accessories include a bottle cage which can be mounted underneath, water bottle, basket, Woom gloves and lights. I also ordered a matching Melon helmet.

Support:
These days it's all about the customer.  Woom no doubt lives by this mantra.  I've had to make a handful of calls to them on various questions and every time they have responded extremely professionally and quickly.  While they are not officially open on weekends, I've had multiple occassions where I received a response from them.  Way to go Woom!

Conclusion:
Overall, an excellent value. I have no regrets with my purchase.  Only wished I had discovered Woom earlier.  The build quality, geometry, customer support, and overall experience has been exceptional.  If you can afford it, Woom is the way to go.
2345330
well, howdy boys and girls, this is a good bike. I researched local stores all over amazon and chose this. It's true that its a large bike, Im 5 ft 6, and the way its set up its too big. So lowered the bars all the way down, that's better, but will likely get a regular seat post without the shock deal, give me another 2 inches to play with, but with the reverse angle top bar not a big deal. The compnents are all good, although needed adjusting, I'm an old guy, just need it to get to the store, and this is perfect. sort of a stealth bike. don't look mike much but dials in fine, and has it all over the gitane I rode im my younger days. I'm styling in the old folks home here. for 250? outstanding likely last me longer than I will looks pretty durable
2705859
Really like this  bike.  I'm 6'2'' 225 and feel that this is a good fit.  Had to adjust the derailer and the front brake came installed backwards but easy fixes.  I'll buy something higherend if i stick with it. For the price it's a great buy and would recommend to anyone
3960132
When my son needed to move up to a 20" bike we searched the web and asked friends.  Most recommendations were in the $100 - $150 price range, which was more than we wanted to spend.  My son found this bicycle by searching on his Kindle, and, low and behold, it was just the right price.  The bicycle came mostly assembled and was put together by my son (7 years old in second grade) and his fifth grade friend.  We only needed to adjust the front brake and it was ready to go.  The bike is very sturdy, has Shimano derailers (very robust and more "high-end" than expected on a sub-$100 bike), a good supportive seat, nubby "off road" tires, lots of reflectors and safety features and an all aluminum frame.  After a week of riding his new bike, my son is thrilled.  We can absolutely recommend this to anyone looking for a well constructed and reasonably priced bike.  (By the way, it arrived in about 5 business days.)
1936995
Love this bike. It is light, responsive, and fun to ride. And it's light. Did I mention it's light? I think it's a great value. Unless you have the time/space/inclination to truly hone it yourself, I would recommend taking it to your local bike shop to get the wheels trued, and have them double check your work. At my bike shop, having them do all that cost ~$40 and was well worth the peace of mind for me.

While this bike has very basic hardware, I have a bike that I feel like I can ride comfortably, safely, and even enjoyably. And as I get more into cycling, I have a nice platform from which to work from.

Finally, the seller was very responsive (<24 hours) and helpful when I expressed concerns about a bent spoke and a wobble on the front wheel. The box looked like it had been graciously kicked while in the loving hands of UPS. I decided to true the wheel first and get the opinion of my local bike shop if it was actually damaged or just a cosmetic issue. They trued the wheel right up and it's in perfect shape. Had it been damaged, the seller had pledged me a replacement wheel, free of cost. That's great business attitude.