The kifaru and stone glacier are going to be on the upper end on what your going to want, if you plan on hunting with a few guys and plan on packing out numerous animals. There a big difference between doing it once, and doing it back to back to back.
The load lifters are huge, when it comes to carrying large loads. Now if your going to carry out 50lbs at a time you can run almost anything. Now if two guys are splitting a bull and try to do it one shot, then hunt the next day, its just not going to happen with something thats not designed for it. I would say on average a guy can carry 30% more with a Kifaru or SG then just about anything out there. I have not messed with the EXO but, it might move up to that level also.
FYI I would personally never hunt without being able to carry meat once they hit the ground! Done it and never ever again!!