You can’t really go wrong with any of the high end brands (stone glacier, kifaru, seek outside, mystery ranch etc). You just have to decide what is important to you like weight, customization, style etc, then find one that fits you. Personally the stone glacier stuff has really grown on me, I like that I can have a 7900ci pack that weighs only 6lbs.
Do all pack.....I think a Kifatu 44 Mag or perhaps a Fulcrum would fit the bill. The 44 Mag could be classed as. Big day pack “No tetrus requires” the Fulcrum probably is the “one bag that rules them all”