I've been using the Photon Proton for a while now. Good light quality and the the dimming and alternate red light capabilities are excellent. The multiple 5mm LEDs seem to have a run time advantage of a single brighter LED. Battery seems to last forever (I am using a lithium AA). Only complaint is the switch. No problem if you leave it clipped to your pocket (or elsewhere). Very occasionally comes on if just dumped into the bottom of the pocket. But, the switch is also what allows for the magic of the dimming and red light. <shrug> Passable tradeoff, though be nice if it had a tail switch and some sort of lockout. That would require both a complete redesign and probably a significant price increase for an already not inexpensive light.