Great pack, good design
I have really enjoyed my Osprey pack, it fits against the body nicely and stays in place on technical trails. It has plenty of storage and puts up with lots of abuse. I love the magnetic clasp, it makes it simple to store the bit valve when you are not taking a drink and tends to snap back into place without fail.
When I first got the pack the bite valve swivel leaked, it had developed a small crack, I emailed Osprey and they sent me a new one free of charge the next day. A few weeks later the new bite valve developed another crack, so I called them up and they explained that it was a known issue and they just redesigned it, I got the new one the next day which was a slightly beefier version and have not had the problem since (plus every new pack I see in the wild now has the updated version). So all in all the pack is great and the company stands behind it, what more can you ask!