I have a Lightwave 3000 out on my car and an ARC AAA light on my keychain. Both work well, the Lightwave is rubberized (so it's not whacking material, but can take a fall) and puts out a very wide beam. The Arc AAA is quite small and puts out alot of light for it's size. I'm thinking about getting the Elektrolumens Blaster 3P for a narrower beam uses (more like a Mag light). Check out Dansdata.com for a bunch of LED light reviews, he's done more than anyone else I know.