Work great so far, hope it lasts a long time
933261
I've been casually looking for a flash to couple with my Nikon D5100. I'm tired of using lamps, white balance, Photoshop and high ISOs. Even the cheapest Nikon Speedlight is fairly ridiculous. However I've been wary of third party photo components. Many times they can be pretty sketchy. I found my way to this flash via SlickDeals. I ended up snatching one of these up for under $70. I figured even if it was horrific, the price was hard to pass up. I've taken about 50 or so test shots with this flash and so far I'm very impressed. Here are a few impressions so far...

Exterior: Typical plastic you'd expect. Head swivels easily enough, but there's no lock button. It's just held in place by friction. Camera attachment is the traditional twist wheel type. I prefer the latch on Nikon Speedlights. Feels cheaper than the Nikon stuff. Built in diffuser and flash card work well. Flash card is loose without the diffuser deployed. Battery door is a bit flimsy. Nice heavy bag and flash stand are nice touches.

LCD: Looks good, gives you all the pertinent info. No issues here.

Operation: Works great. Syncs with camera, automatically uses TTL. Bouncing the flash works great. Autofocus assist reminds me of Predator's laser sight, but in a good way I guess. Lights up the photos well. Not too blown out, not too dark. Flash seems to have decent power. Recycles quickly even with alkaline batteries. Flash automatically zooms as you move the lens barrel.

Overall: Very happy so far. I haven't put it through it's paces yet but for a flash I'll use from time to time, this can't be beat. Looking at reviews online it appears this flash is a popular alternative to the name brand (read: expensive) flashes. If you're a pro or use a flash A LOT, maybe look at the expensive stuff. For the rest of us, this seems like a great flash.
1807049
Working well so far & product is as described.
3515040
I have utilized these about 3 times already and have found them effective.  However, I am wondering if they will be long-lasting.  There is more plastic than I anticipated and this device has to stand up to pressure.  We'll see.
2116820
Working well so far. Last one was a different brand at less than 1/2 the price of this one. Unfortunately it only lasted a few months. I hope this lasts much longer and I get what I pay for. We shall see.
2205181
So far so good!  I hope this product is not short lived as mentioned in previous reviews.
731119
Works as it should. Hopefully it lasts as I have no complaints yet
4048163
Third one and they all lasted for years, hoping this will also. They just work well for me so far.
548373
So far I'm very pleased with these. We use these for things around the house that would normally accumulate a lot of trash batteries and I have no complaints about their holding a charge. Will update if this changes.
2054667
Works great. Will update review after we see how long it lasts. But packaging and instructions were also good although the instructions sheet and email could use some good proofreading.
1632103
Good so far, let's see how durable they turn out to be.
877231
Cannot comment on longevity yet. These were easier to install than I thought they would be. They seem well built to me and they look like they will last a long time. I can't imagine why someone would spend the money on a higher name brand.
1937759
While I don't know how long these will last, they are working great so far. The price is excellent compared to other variants that are on sell elsewhere on Amazon. I recommend using the plastic cushioning that surrounds the bulb to handle it when placing it in the receptacle. That way you will keep your fingerprints off of the bulb which can lead to it having a shorter life.
2528733
So far so good. Time will only tell how long they last. I'm not getting any sort of error messages.
4062490
working great so far, would definitely recommend this product over other off-brand substitutes
4891957
Time will tell on how long they last but friends have recommended these so we shall see.  :)
1111054
So far, so good! I just hope this one lasts longer than the preceding one!
3634649
They work like my old ones, though I hope they last much longer.
First time trying Ziploc, I hope their reputation follows them.
That's what I'm counting on.