Alright, I've been shopping for a new light. After a few too many close encounters with skunks (came within a couple meters of more than 6 skunks in one night), I've decided that my 5-watt halogen just doesn't cut it.

Check out the attached file...

What's I've done is a basic comparison of some HID lighting options out there. Red means I've decided there are better options, and green means it's probably what I'll go with.

The other pages in the Bike Lighting.xls file detail battery options- that's what should be most interesting to you. I have every single battery pack from 11.1V-14.8V that they sell, with the exception of the really small ones, those are never the best value, and are rarely the best option for bike lighting.

Some of it won't make sense to anyone, this was primarily created for my benefit, but you guys are free to do what you want with it, I hope this helps.