I hope this isn't considered spam, but I'm in the process of putting together a DIY led light kit. Should help with all those annoying choices the beginner needs to make. What LED? What optics work with what LED? Batteries?

More details can be found at:
http://forums.mtbr.com/showthread.php?t=373277

I'm in the process of trying out a few different designs. I'll probably have a few kits available by mid feb.

Mark