Surefire 6P is nice
+ handy, rugged, bright
- CR123 batts (although used as an occasional carry/pocket light the batts last a long, long time)
O-light
+ LED
+ multiple settings (of which only low power and high power are really usefull...strobe is very annoying

)
- should have gotten the size that fits different colour lense covers
- a little bit slim...slips through a couple of the flashlight belt holders I have
??? Scorpion
+ bright, rubber coated
- moisture leaked into mine leaked and the bulb cooked
- CR123 batts
* gen notes
- LEDs with AA batts last forever and no issues with getting batts from anywhere
- LEDs with CR123 are WAY brighter than with just AA's
- perhaps it's just the o-light that I have...but the beam is very focused, good and bad I guess...i.e. very bright center (almost a wash out) and not much ambient illumination
- 50-80 lumens is bright enough for CQB, camping, around the house, etc...once you're over that you're into more expensive bulbs/batts.