I’m a Kifaru user and have been very happy with their old Bikini Frame & HighCamp bag. Old school but very durable & compressed really well when it’s empty. There are many more modern options offered thru Kifaru. I’d also analyze what you’re most likely to carry in it. I’m a backcountry hunter so I make sure I can still carry a few pieces of camp while packing meat.

Anyhow, good luck there are lots of great ones - Stone Glacier, Eberlestock, Mystery Ranch (sweet frame design) & all the ones previously mentioned.