Thanks for the input, all. I should have been more clear - I'm still not sure what HID means (excuse my ignorance), and my goal is to lose the battery pack. I want something that takes standard cells instead of a bottle-sized battery pack. I'm think two of the Cateye EL500's will work. It also appears that converting candlepower to lumen is difficult, so I'll have to see how the Cateye compares to my CygoLite and go from there.
Ziemas: All temps, currently chilly (down to 10 F) and the price range is sub-USD $100).