Sunlite makes nice stuff too. snap on dealers carry them as well. fairly pricey for the rechargeable type though, me and several other techs went from small pocket Streamlights to the sunlite slims, they are nice cause lifetime warranty, and use standard AAA batteries (which my parts department supplies free). 100 lumens and about the size of a sharpie, hard to beat. really the batteries seem to last quite some time. been at least 2 weeks on this set of AAAs and this is the only light I use, hold it in my mouth to work under the hood, in the other hand to do other things, etc.
I have not tried all the brands, just Streamlight Stylus (takes inconvenient AAAA batteries and was not that bright), Inova X1 (super nice for 1 AA battery not as bright as the Sunlite slim), Coast LEDLenser 7345s (have 2 of these as home flashlights, takes 3 AAA batteries, 65 lumens, over 100 hours on batteries). I also have the 18v dewalt light to go with my 18v tools I use, a 10.8 bosch light to go with my ps20 and ps40
main thing is to look for lights that take common batteries, rechargeable units would be nice but are expensive, it gets old buying special sized uncommon batteries, also look for something that can be easily warranted because realistically it will take some abuse, I drop my lights all the time, corded lights are a drag and get in the way, small portable stuff is the way to go IMO.