Pika wrote: If you were buying a new pack, which one would you choose?
The one that fits!
Bring all the crap you climb with to the store and start loading up packs. Try on numerous packs from numerous brands. Make sure you can fit all your gear in the pack (or don't have too much space left over). May the best pack win.
That being said, I have met few people that didn't like the fit of Osprey packs.