+1.

I love my CREE flashlight mounted on my helmet. Excellent light for a AA flashlight. Great for turning the head and shining it at drivers who may be unaware. Also great for side of the road repairs (although I'm lucky enough not to have needed that this last winter).

But I am not comfortable running the flashlight by itself on a dark unpaved trail with no lights. Last winter, my Magicshine was the primary light in such situations with the flashlight as a backup. No problems with the Magicshine. Once I didn't have enough battery to make it off the trail with the Magicshine (the fatal flaw of battery-based systems, which is why I now have a dynamo hub) and had to ride the last mile with only the CREE flashlight. My knuckles were extremely white by the time I was off the trail. Not fun.