The new Photon is a real nice light, just awfully expensive compared to some of the other stuff you can get:

http://www.countycomm.com/light10.htm

http://www.countycomm.com/super%20Tough%20LED.htm

Rather than one super fancy whiz bang light, I think I'd rather have a half dozen or so of the low cost types clipped to various different pieces of gear.