A good place to look at discussions and reviews on flashlights is candlepowerforums. There are a lot of folks on there that take their lights seriously. Some have collections of flashlights they talk about and post pictures of the light patterns produced by each. Lots of testing, reviews, and discussion of the latest items to enter the marketplace also.
I have a lot of different flashlights and do like the LED ones for battery life and bright lights. I like to keep a LED keychain light on each set of car and housekeys as they are very cheap (Meritline or even dollar stores) and provide an emergency light when needed. My Maglite would be great as a weapon although I don't find it any better than cheap ones as a flashlight.