Petzl Tikka XP Headlamp is Great
I have not used it much yet, but the Tikka XP headlamp is great. Its very bright for only three AAA batteriesas bright as a 2 AA Maglight with spot beam, and it also has a diffuse beam pattern. The vertical angle adjusts, which is a must for those with variable-focus glasses. Too bad it costs so much. Guess you get what you pay for.