Originally Posted by
geo8rge
Headlamps put weight exactly where you don't want it, on your head. They also put an object between you and the road were to to go head first over the handle bars. So you might want to go "small" on the head lamp.
Don't think that the OP was talking about light placement; just trying to figure out how to compare the output of his flashlight to something bike-specific, like a Cateye.