I just came back from three weeks in Peru using this. Very light, lasts ages on a battery, and you can wear it with the shock cord instead of the headband.

The downsides are that it's an area light with no throw past 20 feet or so on medium, and that low is really really low. I only noticed in the jungle since nights there are pitch black. With a bit of supplemental moon or starlight it was ok for close work and reading, though.