I recently purchased a new Black Diamond Spot headlamp. This new one is rectangular and has 200 lumens of light power. AFAIK right now it’s only available at REI, but soon you will be able to get it everywhere BD lights are sold. It’s about 40% stronger than my previous favorite headlamp, the old Spot. The morning after this video I took it for a training run, 11+ miles in the pre-dawn blackness. Here’s a video where I introduce it.
Black Diamond Spot Headlamp Introduction