I probably didn't word that very well. We don't really have a team standard. My current personal headlamp is a Princeton Tec Quad Tactical. Runs off three AAAs, and has a flip up red filter. Waterproff and robust. In winter, when a headlamp is most essential, I'm usually also carrying my avalanche tranciever, which also runs off of AAA. I always have at least one spare pack of AAA's in my pack. In the bottom of my pack I also have (winter and summer) a little bitty Princeton Tec (can't remember what it is called) that runs off of flat (2032?) batteries. Tiny, and lightweight, it is there for when Mr. Murphy shows up. I think that model light is now discontinued.

Sadly, I also have to carry AAs, since my GPS uses them. For winter use I've been thinking of upgrading my headlamp, possibly to a Black Diamond Icon. Might work better in the cold, but heavier. Still considering the tradeoffs.