As it has been said before, look into the Osprey line of packs. I myself use an Argon 85 and absolutely love it. I was going to buy a Gregory, but after deliberation decided that I didn't want that hip-belt piece breaking 50 miles out from the nearest civilization and have to pack all 60+ lbs on my shoulders. I went in to the local REI and had the hipbelt molded to my body; the pack feels like a dream out on the trail! Osprey is a real pleasure to deal with customer support wise too, and their warranty is amazing.

Take this for example:

"Osprey will repair for any reason, free of charge, any damage or defect in our product – whether it was purchased in 1974 or yesterday."

http://www.ospreypacks.com/CustomerService/AllMightyGuarantee