For those of you that actually get up high and out in the cold:
I run a BD Spot right now. I need to replace it.
I like that it is light and fairly bright, but I'm worried about it in some of the more extreme weather I get into. It has almost let down a couple times. Maybe I have a lemon.
My understanding is that lithium batteries are lighter, not really affected by temp fluctuations, etc etc. However, I'd like to use something rechargeable, and I know I'll suffer longevity and a little weight. Lithium AAs = not rechargeable, yes?
In addition...I'm considering the BD Icon/Princeton Tec Apex (remote-ish battery pack/brighter beam/etc) instead of something lighter like the BD Spot or Storm.
Am I kidding myself? Will the fact that the batteries will be under a hood in potentially brutal cold vs out front really make a difference? Will that extra 4 oz of weight be the thing that blows my stubby screw when I take a 40 foot whipper on WI7+????
Personally, having only worked with the lighter-style models, I think the extra brightness and the batteries on the back (for possible added warmth under a hood) would be well worth the added weight.
Chime in if you've got experience either direction, or have some technical knowledge on the newer headlamps...i.e. the LEDs actually help to warm the batteries on the Storm/Spot style models, etc etc.
Also chime in if you have a "Mummy" comment, or something similar.