I also have a helmet mounted light and another light on my bars. I set the bar light to flashing mode as an attention grabber and the one on my helmet is good for actually seeing, laser beaming daft drivers etc.


I bought the helmet light for night mountain biking to supplement my old HID light and it has a pretty good light beam - my OH has done an entire technical offroad MTB ride using just the helmet light. My new HID is making it a bit redundant for offroad though.

I have one of these:

http://www.use1.com/exposure/product...2009/index.php

The mount is fantastic and can be pointed wherever and the Li-Ion battery is part of the light so no trailing wires. It has a three hour burn time on full whack so doesn't need recharging every five minutes.