In reply to gcandlin:
if you can find one, the millet exped65 is amazing.
65L obviously, but a 'big' 65 as very little is spent on pockets.
the extender throat gives you another 30 or so which makes for a pack big enough to form half a bivvy set up as i know thru experience.
weighs about 1.5kg UNSTRIPPED/HACKED AT, which is amazing. its simply a big tube with a vertical access zip and drow top, with a floating lid and two mesh pockets.
the harness is basic but made for big loads - after nearly 4 years of solid abuse only now are the shoulder straps starting to squish out. i regularly haul 35kg loads in winter and its been adequate for that.
i stripped mine by ditching the lid and cutting off all the straps that went with it and the belt loops (sorry radson).
the axe loops are real ones designed to take mixed tools.
the vertical zip acts like a duffle when you want it to.
im talking this thing has taken incredible abuse, surviving multiple expeditions, porters, crossing china a few times, been dumped out of helicopters and dragged up rockfaces. its even served as a rescue pack and rope bag.
why this pack never gets more attention bewilders me. when people on expeds see it they often get one for themselves - ive even been offered money for my own!
not too expensive either.
cant say enough about it and will definitely get another.