Lighting recommendations needed

I just picked up the NiteRider MiNewt. I completely love the size of the battery. I have a 90mm stem, and the battery fits on just fine. These are small enough to have one on your handlebar and one as a helmet mount.

http://niterider.com/prod_minewt.shtml

Off Topic Response:

I highly recommend a visit to the Grove Park Inn. Even if you don't stay there, the lobby is really cool


http://www.groveparkinn.com/Leisure/

So, I took the plunge and bought the L&M ARC HID light. It's overkill for the tunnels--my original reason for getting a light. Having done a lot of reading and thinking about night riding, however, I decided to outfit myself with something that would allow me to do it properly (I also bought a mack daddy Cat Eye taillight). It could end up being a really expensive experiment or the best money I've spent on my bike.

Ironically, I went for a ride on Monday that despite being theoretically in the daylight, it was really hard to see. I would have benefitted from some lights even in those conditions.

Thanks for all the great advice.

Kate