Well I was browsing around some ATV forums and found this LED. Might make a good 4x4 vehicle reverse light - not too pricey and illumination appears ok. Unfortunately the ATV thread has mostly pics of the lights mounted on motorcycles, but not many beamshots. I'll see if I can get some fellows to post up some beamshots on the ATV forum. I don't want to spend too much on reverse lights, but these might be good enough for reverse lighting on forest trails, etc., when turning a truck around at night.
http://advrider.com/forums/showthread.php?t=751838
http://advrider.com/forums/showthread.php?t=751838