I teach backpacking and own and carry three Go-Lite http://www.golite.com/packs-and-lugg...ntry-ultralite bags (since we've left "fishing" packs behind). They're on sale right now. I recommend the Jam ($69) for a day or week-end pack. The Pinnacle ($79) for a week long pack and the Gust (which they don't make any more) for a long distance pack. These are ultralight bags so don't expect much in the way of waist belts and padding. You only need padding and waist belts if you overload your pack... (Yes, I have cut the handle off toothbrushes and the margins off of maps to reduce weight) They are very durable.