Pros: First off, this is a very well constructed flashlight. Nicely machined, good threads, flawless finish, all the good stuff. The P-60 drop in that is in it looks to be fairly well made (maybe not quite the quality of the 11836, but close) and also quite bright, again, slightly dimmer than 11836. I might have gotten lucky, but the LED is very, very white. The whitest I own.
The best thing about this light, for me, was that all of the pieces, with one exception, are C-series compatible (6P, G2, etc..). The body unscrews into 3 different pieces, and all 3 pieces will thread onto and work with all C series lights I've tried. This means you have a straight one cell extender, a one cell extender with the cool grip ring (like the detonator one cell extender) a clicky tailcap (that a F***x forward clicky fits into like it was made for it) and a c-series compatible head.
All of the DX/KD drop-ins that I tried work in it as well. All of the DX drop-ins also require the outer spring, and the P-60 that came with it has an outer spring, unlike the pictures. This leads me to believe that maybe the internal tolerances have been changed during mid-production. Forum member gearhounds had issues with the head closing all the way with the spring in place on the 2 cell light, but this one has no problem here, and, as previously stated, an outer spring is included with the stock P-60, and is required for function. . No head gap issues with any of the drop-in's tried. This light has increased my SF lego combinations considerably :)

Cons: The stock switch was hard to press. I think the little button under the rubber switch boot may have been trimmed a bit too short. I replaced the switch with a forward clicky anyway. The spiky bezel is just ridiculous also.

Other Thoughts: I liked this light so much that I ordered another immediately, in case DX drops it or changes it. I only did this with one other light, the Romisen RC-G2. This is probably my favorite light I've bought here, and definitely my biggest suprise as far as how useful the parts are. Even if you don't like the light, it's got all kinds of cool lego "building blocks" if you're a SF lego fan like myself. Look past the toothynes of the bezel!

Bottomline: Buy one!

Pros: This light is great light for police military home defense, or in the tool box!
The CREE LED is much brighter and more white light than my Surefire G2 LED.
The strike bezel makes a great pain compliance tool when you stick it and twist into an agressor. The sectioned body is sealed with o ring and can have a section removed to make a 2 cell light.
The light is very well constructed. I used it in a night rifle class mounted to a m16 and didn't fail!

Cons: The tailcap button feels a little like it may eventually come out but hasn't yet and is no worse than surfire's
the strike bezel is not removable without having something else to retain the lens in its place.
Strike bezel creates star patterned light in close quarters.

Other Thoughts: I just ordered 3 more of these because friends are asking where they can get one.

Bottomline: At this price you might as well skip over the other brands and get one!