Huge and Comfortable
On my first outing with this pack, I didn't have to go far, but I needed to carry a lot. I packed it to its full 72L "extended" size and still found it quite stable and comfortable.
Next trick: with a smaller, lighter load I climbed a steep trail of about 1000 vertical feet--with switchbacks, downtrees, outcroppings, and lots of large rises and drops mid trail. Throughout, the pack was stable and easy to carry--quite literally I forgot I was carrying it.
Easy access to side pockets for bottles, camera, etc. Very nice hydration tube holder on straps. Easy adjustments. Waist strap is a godsend of technology. (And yes, mine did start to squeak after a short while...)
Bottom line: a VERY comfortable pack with size and organizational features which befit a 3-5 day outing.