This pack is tough, durable, versatile and well thought out. I've been searching for a good replacement pack for 2 years and this is it! I just took this pack on a 4 day ski tour across the Olympic Mountains, WA, and it easily cushioned and handled the 60+ pounds. The pockets are well laid out with nalgenes on each side as well as side pockets for small items. The side and top compression straps work great and make this pack versatile for smaller trips. There are ample attachment locations for ice ax, crampons, skis, skins, pads, etc. The built-in rain cover was plenty big to fit over my tent, crampons and everything else I had strapped on, and stayed on in 70+ mph winds.
The only negatives are that the skis did tear a small hole in the back of the pack when carryed diagonally, but this pack wasn't really meant to carry skis and the pack held up fine to crampons and general abuse.
The vari-quick fit is the best adjustment for torso length EVER! It may just be the best thing since sliced bread.
Bottom line: This pack will get it done.