I've heard a few people here recommend this Trustfire TR-801 flashlight as a good option for use as a helmet light. It's a single mode light, 230 lumens. I see they also offer a 5-mode Trustfire TR-801 which seems to have the same specs, as far as emitter, battery, lumens, etc. Does anyone have any experience with that one? I like the idea of having 3 brightness levels, to conserve power.