>>922710>Stay away from cheapYou can turn cheap into decent, but you have to be willing to put in the time to reinforce the seams on major load-bearing areas. Obviously you can't do much if the material itself is shit, but lots of cheap packs are made of adequate materials and are just slapped together quickly.
Still, unless you're a total poorfag or just really like DIY (in which case why not just make a custom one from scratch?), saving another 50-100 bucks for a better pack isn't hard.