Like mentioned before, you can’t go wrong with Kifaru, Exo, or SG. All great options just pick the one that fits your body the best then figure out which bag you want. All have a pretty good return policy as well.
I was in the same boat and landed on an Exo K4 2200. I can use it all throughout the year here at home with the 2200 pack. I have my eye on the classifieds looking for the 3600 or the 5000 pack to swap out closer to my trip. That way I can use it for many different purposes and it's not an expensive pack just sitting all year waiting for one or two trips.