This is the best headlamp I have used for backpacking… ever.
It's light 1.2oz (3.5oz with battery and headband) headlamp that runs on a single AA batteries. It has 6 light levels from with good quality regulation (lumens/time: 0.2/19 days, 2.5/3 days, 8/39h , 30/12h, 100/2h, 200/55min) The beam has a hot spot with enough throw for way finding and enough spill to be useful for around the camp. The headband is comfortable and removable. The glow in the dark holder makes it easy to find at night. The only thing this light is missing is a battery life indicator. For people who prefer CR123 batteries, the Zebralight H31 looks equally interesting.
The only thing I wouldn't recommend this headlamp for would be extended winter trips where you really want a remote battery pack for the extra power capacity and to keep the batteries warm.