There are better options out there
592532
The finish on the blade is EXTREMELY easy to scratch off. The thumbstuds kinda suck in MHO,they are rounded. Blade alignment is a little sloppy. Pocket clip is not repositionable. The rubber coating on the handles is a marketing gimmik. Bad placement of the tension lock (I cut myself closing it). No jimping on the top of the handle (seriously they should put jimping on that thing). Instructions suck ass! They weren't even for the right knife & even then they were very vague. And you need to flick your wrist and use the thumbstuds at the same time to open it with one hand.
359585
Picture isn't great. Sound quality and communication ability isn't great. Really there is better out there for less money. Plus you have to pay for storage.
2514412
This headset is not great, not terrible, just fine... "meh." For the money, it's probably best to look at other options.

The Good (yes, it's a short list and not particularly impressive)
* Pairing can support two devices
* The charger is more versatile than average - both a USB charger and a car USB charger

The Bad
* The sound quality is a bit muffled, and the reason I always opt to use my Plantronics Savor M1100 instead. (Initially I had thought it was unfair to compare the two since the Plantronics used to be double the price... but as of today this one is actually more expensive on Amazon, which means the sound quality is quite bad compared to something else you can get for less)
* The over-ear hooks are a thin, hard plastic, and uncomfortable to use

The Average
* In-ear holder - very average; works well enough
* Pairing is easy (like most Bluetooths)
* Controls like mute, volume, call answer are all fairly normal and easy to use

All in all it's decent. But you can probably get something better for the same cost.
4540711
For what you pay for this book it should be much more substantial.  There are much better options out there for this price.
1423564
These are not bright and do not stand out. They fit, they work, but there has to be better options.
4714803
This is not a very convenient tripod, there are much better options out there that will attach more easily to unstable surfaces. This tripod actually is difficult to use, you have to unscrew to move around the camera's direction and then screw back on. Works better with really small & light cameras as opposed to mid-size Point & Shoots like mine. The screw become really difficult to use after continuous use, and then eventually failed.
2745603
This would have been a great hands free option for people who have an aux port in their car.
There are 4 major fallbacks with this unit.

1) The audio out does not come from the docking port,  you have to plug an additional cord to the iPhone headphone jack.
2) The person on the other end of the call hears an echo of their own voice. You have to turn down the volume so low you can hardly hear the other party talking in order to get rid of the echo.
3) The mic pick up is not that sensitive and does not offer echo cancelling.
4) You have to crank up the volume on your stereo to engage in a phone call, then when the call ends, your radio or CD blasts out loud.

Good idea, but unfortunately it does not perform as expected so I returned it.
4083504
Works well, I use it as a receiver for car, but for headphones, there are better options
166821
This item has some nice features: affordable, good suction, long cord, variety of attachments, goes from carpet to hard floor easily, not too loud. These are outweighed by other features:
- it is very heavy - you have to have arm strength to hold the handle and hold up the weight;
- the attachments are not enclosed in their own compartment, rather they are stuck onto little hooks along the outside which causes them to be easily dislodged while moving the vacuum around the house and around furniture;
- the telescoping wand has a position lock, but it does not work well, and you will find it slipping to a shorter length when you least expect it;
- when using the extension hose and attachments, the vacuum will not stay upright unless you keep one hand on the heavy middle canister to prevent it from tipping over while you stretch the hose;
- the angled brushes are a great idea, but they do not hold the angle they are set at so when you, say, swipe them along a high shelf or fan blades, it straightens out rather than staying angled
- the vacuum head does not get close enough to the edge of a carpet to sweep along the base of the wall

In short, save your money and don't buy this one; it is not worth the hassle when using it.
1449756
This is not as bright as they made it out to be. There are better ones out there.
2776158
This FM transmitter is just okay -- not great, but not total garbage, although it's definitely on the low end of the quality spectrum.  It's one of the cheapest FM transmitters out there right now, so you're getting what you pay for.  I knew that going in, having sought out an inexpensive transmitter to use with my iPod during a car trip down the East Coast.  On this unit, there are two separate wires that extend down from the transmitter; one wire plugs into a cigarette lighter, and the other plugs into the headphone jack of your MP3 player.  This setup -- wireless FM transmission with a headphone adapter, all powered by a cigarette lighter -- is the one solid benefit of this product, because it's compatible with all car stereos and all MP3 players.

However, actually listening to your music is easier said than done.  For the unit to work best, you first need to find an FM radio station with absolutely no signal at all, just total static -- rare in many urban areas.  Then you press the gray arrow buttons on the transmitter to match the desired station.  And then, in order to hear any sound at all, the transmitter needs to be held right next to your car's radio -- like, touching it.  (I would guess that other reviewers who couldn't get the transmitter to work on any station, even static ones, probably weren't holding the unit close enough to the radio.)

See that round, gray button thing on the right side of the stock photo?  That's the clip, and there's a reason the unit comes with it.  The transmitter's signal is so woefully weak that you'll need to literally attach the clip to your stereo and then hook the transmitter onto it.  Not wanting to permanently stick something to my car, I used sticky tack to temporarily adhere the clip to the face of the radio, which held fine.

Despite the most patient setup, some static stations won't work at all (why?! arrgh!), yet others will be as clear as a bell.  It takes patience and periodic readjustment, especially if you're driving long distances; we had to adjust the tuning every 60 miles or so.  And even then, the sound quality was mediocre at best, with occasional light background static.  Luckily, we had two people in the car, so the driver could focus on the road and the passenger could adjust the transmitter.  I can't imagine driving while trying to adjust this thing.  The two memory buttons would come in handy for around-town driving, provided that you took the time beforehand to set them to suitable stations.  But if you're driving a long distance alone, get a different transmitter.

One other benefit: Because this transmitter plugs into your car's cigarette lighter, it doesn't use your MP3 player's battery.  We were able to get the full range of battery life out of our iPod during the road trip.

This transmitter serves its purpose, albeit begrudgingly.  We'll continue to use it until we find a better-functioning replacement that's compatible with our iPod and car stereo.
3902954
I'm disappointed in this clock. It's not a bad product (it does what it says) but there are several better alarm clocks out there for the same price that offer far more functionality than this does. It doesn't auto-sync to proper time or automatically go to correct time when plugged in like several competing products do. It runs slow and constantly needs to have the time adjusted. The alarming option is antiquated - limiting you to a 7-day only option where similar products offer Sat-Sun only, Mon-Fri only, 7-day, or customized days. So, beyond the projection and charging option, I can't see why anyone would buy it - especially when there are so many other products out there that do offer it all (for the same price).
320769
I guess maybe I was expecting something a little different.  I got this on a lightning deal since I had been wanting a GoPro for a while.  I thought this would be a good and cheaper alternative.  It is cheaper, but lacks a number of features I wanted.  In the end, it seemed like an upgrade to a cellphone video, but not a reliable and long running camera for documenting an extended bike ride or paintball game.

The Good
  For me, the video looked fine, about what you would expect.  I guess it would be fine for short Vine videos, but cant you just use your cellphone.

The Bad
1.  To change the settings from 1080p to 780p or the framerate requires hooking up to a PC.  Once unplugged from the PC your only choices are record on/off, or record for 30 seconds.
2.  As noted in prior reviews the recording on off light is hard to see.  This is especially a problem for me mounting it on a bicycle or a helmet cause you don't know if what you are recording is actually being recorded unless you look directly into the lens.  This would not be a problem if you could set it to record everything and then forget about it - but the battery does not last that long.
3.  There is no option for time lapse photography.  If you want to get pictures from an event of more than 1.5 hours then forget it.  The battery won't last that long and you cant baby the battery by setting it to take a picture every 5 seconds.

In the end, it just was not for me.  I will buy a GoPro: probably the 3+
3766846
Good protection for under $20 but there are better alternatives out there. This case is far from being perfect . From having a plastic feel and the fact the kickstand is also made out of plastic and not metal like the kickstand from the first HTC Evo from Sprint, the case does it's job for the most part. I noticed thd kickstand sometimes comes off and needs to be installed again, the back of the case scratches easily leaving heavy marks . ( I have the red color. ) would I recommend this case ? Yes. Is it my favorite case? No. If you want a nice case that doesn't add bulk to your phone , get the samsung oem protective case . It is much cheaper and way better case than this one.
2803681
I added this to another order on a whim. The App is childish and the temperature sensor itself is slow to react to changes in temperature. This might be okay for monitoring your refrigerators temperature, etc, but there are better and cheaper options. I would not buy again.
4461908
This unit is fine if you're not finicky about sound quality. We all know what digital recording *should* be, so I'll concentrate on what the PMD-660 is *not*.

1. Mics: The unit has a pair of Neutrik XLR mic inputs with full 48V phantom power, unlike competing products in this price range. However, according to the people at Audio-Technica, it's a waste of money to buy good quality mics, because the Marantz does not provide a "clean" current: the phantom power adds noise to the signal, which ends up in your recording. The mini-jack isn't much good either, so most Sony, Audix, and Audio-Technica mics give poor results. You want to use battery-powered mics with XLR cables, and keep the phantom power turned off. This doesn't give you the frequency response of good phantom power, and severly limits your options when selecting a microphone.

2. CF card: The unit won't work with most brands of compact flash card, such as Sandisk. Marantz recommends only three brands: Lexar as the first choice, and PNY or Viking for second choice. I bought a 4GB PNY card (substantially cheaper than Lexar), and the recorder could only read it sporadically. Neither Marantz nor PNY tech support could help. I ordered a second PNY in case the first card was defective, but no dice. The little Renesas brand card that comes with the unit works beautifully, but I don't know where to buy them.

3. Batteries: The recorder isn't designed for rechargeable AA batteries, which only work sporadically. You need to stick a screwdriver into the battery port and pry the positive tabs outward so they make proper contact. (This is what Marantz tech support suggested.) Easy enough to do, but frustrating until you figure it out. Four freshly charged Energizer 2500-mAh batteries give you 3-1/2 hours record time using the internal mics and everything else running at minimum power. I haven't yet tried an external battery pack, but Marantz says they expect the unit will switch over to the internal batteries once the external pack runs out.

4. You cannot download via the USB port on batteries, such as when you're in the field. If you don't have AC power, you need to remove the CF card. The USB port is very slow (it's only USB-1), so you may not want to use it in any case.

5. I've read complaints that the PMD clips the sound flat (insufficient headroom), giving it a metalic/mechanical sound, if you don't set the proper recording level, but I have not (yet) noticed this. All recorders will clip, of course; the PMD is just supposed to sound worse.

Unfortunately, the two competing products (the Edirol R-09 and the M-Audio Microtrack) seem even worse, and the mic people won't recommend either of them, or the Marantz PMD-670. According to them, the cheapest digital recorder that actually does what the PMD-660/670 claim to do is the desktop Tascam HD-P2 at more than twice the price.

I'm only giving this two stars because there's nothing better in its price range. But it isn't cheap, and I'd expect a much better product for my money.

It looks like the Oade Bros. modifications (see previous reviewer) address the phantom power and headroom problems, but can increase the price by 75% (Oade Advanced Concert MOD vs. cheapest unmodified unit I've seen). I wish I'd known about this before buying.
3841568
There are much better options available. I, and my students, found this generally to be modestly written. It's difficult to write about math in a way that is generally accessible. I found this to be a bit out dated as well, since the ACT has changed some of its strategies in the past few years, It isn't as efficiently ordered as I'd like. This would be best for someone who is homeschooled and hasn't got a math teacher to filter the material. It's almost like a junior year refresher course rather than an ACT prep guide. Also there are some typos in the equations and the formatting for exponents is difficult to read.