I've got a Cold Cold World pack (the bigger one, whatever it's called), and have used it on trips up to three days in length. It's okay. There's some stuff that's brilliant, and other stuff that's dumb (actually, my design gripes are the lack of angle on the waistband, and it's tendency to flop over my ass when partially loaded, but that's my fault for loading it weirdly). There's a guy in the town I live in that also makes packs: www.wildmanpacks.com, so that's yet another option.
BTW, my favorite pack is one I made for myself that I've been using for 12 years. Someday I'll update it, and be ready for another decade of abuse.