Love this pack
I have had the Aether 70 for about three years and have used it on multiple week-10 day trips. It is large enough to fit my winter gear/bag as well as 10 days worth of food. After several hundred miles the only way you can tell it is old is because it is dirty, no rips, cracks, or any defects. I have carried up to 60lbs and it has held it without trouble. I am getting ready to buy my 3rd Osprey pack and would never go with another company (Talon 33 and Stratos 24). The top "brain" of the pack comes off and can be combined with the waist belt to act as a fanny-pack. Big enough to hold two nalgenes as well as a clif bar or other snack.
I would highly recommend this pack to anyone and everyone.
Tip: the nalgene holders on the side are kind of tight, but if you put them in horizontal as opposed to vertical (through the side of the pocket) you can access them while you walk.