For the record, I currently use a SSC P7 flashlight on my bars and an EagleTac T10L on my helmet. During and after my rides, both lights are extremely cold to the touch. I use the EagleTac on high (255 lumen) and I alternate between Med (apprx. 180 lumen), and High (approx 550 lumen) on the SSC P7 and usually only need one. I actually have two on my bars so I can switch over when one fades out. I have only had to do this once, on a ride over 2.5 hrs.
Granted, the EagleTac was approx. $60, but the quality is apparent. You could go with a similar 230-250 lumen light from dx for $20-30 and around $130 total for your setup (batteries, charger, mounts).
My helmet mounts cost about $2.50 (I think...could have been $5). The group I ride with are pretty darn impressed with the amount of light.
So, depending on how long you ride at night, you shouldn't rule out flashlights unless you really just don't like them...just something to consider; regardless, I hope you find what you are looking for.