I'd recommend looking at one that is capable of hauling enough load to at least handle your first load of meat but is still small enough to hunt efficiently with. There's nothing worse than having to make a 2 or 3 mile trip back to the rig (or cabin)just to get your pack frame and go back in to get your first load of meat.
I typically hunt with a partner and we each use packs like this. If we kill an elk we bone it out on the spot and put it in game bags. We each take out a hind quarter on the trip out and we're half way done. We keep external frame packs in the truck and take them in to get the last load.
I use a Badlands 2200 (old one when they were still made in the USA) and have hauled out 7 elk with it. There are lots of other good options (Mystery Ranch, Kifaru, Eberlestock, Kuiu)and I'm sure others will chime in, the Badlands just happens to be what I have and it's still going strong.
Good luck and post some pics of your hunt!