Pros: Super bright, very nice surprise on brightness and the build quality... Body very nice, Sturdy, tight, metal finish...
and I think that the Clamp is also very strudy... Very nice Bike light...

Cons: So far no cons - Except for that it takes 4 AAA batteries... Depending on how long they last it could be a bad thing or a good thing... and maybe.. So bright I shined it in my eyes and blinded myself for a few seconds, well I guess it could be a Pro also,,lol...

Other Thoughts: Other thoughts are why in the world do we have to write so much for an item review, we are doing you Dealextreme a favor, and writing a review reminds me of school when I was just blabbering on and on just to make it to the Number of words needed..lol

Bottomline: Anyway Bottom line , I think if you need a Super bright light for your bike and don't want to spend $50-$250 Dollars this light is awesome... I was skeptical of a light this cheap, but now That I got it, I see it is definitely worth it and then some-- its an awesome light - you wont be disappointed...

Pros: A pretty bright light for a great price. Has the constant-on and the strobe function which is great for getting attention at night.

Cons: Takes 4(!) AAA batteries.
The clamp mount on it is terrible. It swivels to the side and locks in different positions, but when you ride over a lot of bumps it swivels to the side so we had to resort of taping it down so it wouldn't move everywhere.
Another issue with most of the lights that we got is that sometimes it won't turn on or it will shut off even with the head and tailcap screwed in all the way. A quick and easy fix though was to take some tape or shredded up paper at the bottom where the circuit/clicky button is to push the light farther inwards.

Other Thoughts: I bought six of these, two each for me and two friends. All of us have issues with the mounts themselves, and one of the lights was a LOT dimmer than the others, and all of them except for 1 have issues with the lights not staying on. Aside from those issues, its a great product for what you pay.
another thing to note, the flashlights that we received had branding on them. Its apparently a Spark flashlight..... not necessarily a good or bad thing.

Bottomline: Its perfectly bright enough for a casual ride at night, but it probably won't be enough if you're going downhill really fast on a mountain bike or some trail. People will see you for sure on the street, though. The best part about it is the price! Time will tell how good the battery life is.

Pros: The building quality of the light unit itself is excellent, however the detachable bracket is not built to the same standards, this hasn't been a problem as yet, but could be in the future. The bracket does however have a nice detachable screw to remove the it that doesn't require any tools.
The light is very very bright, it actually beats my Cateye which cost significantly more.
The unit appears to be pretty water resistant with a rubber seal on the batter compartment, however I probably wouldn't use it in a super heavy long downpour, but who actually wants to ride in that any way!

Cons: Just the cheap bracket as mentioned above, only time will tell if it holds up.

Other Thoughts:

Bottomline: Good light for the price, but lets see how the bracket holds up!

Pros: Nice little unit. I was looking for a headlight but didn't want spend another $30 like I did on my cateye taillight. Price is good, reasonable build quality but nothing spectacular.

Cons: Mount is a little flimsy. Would like it if it clamped tighter but that should be a pretty easy fix.

Other Thoughts: Light output is sufficient and functional for around town at night, but if you are serious about biking at night you might want to consider something with more light output.

Bottomline: I like the quick disconnect and it doubles as a handy little flashlight. Well worth the price.