I am in need of a new pack to start backcountry hunting. Starting with bow in colorado for elk. I plan to stay anywhere from 3-6 days. I have been researching packs and they all seem nice to me. I want a quality pack that will last. I have been looking at MR, kiufu, eberlestock and badlands. Is 4500 cui around a good size for this length of trip or should I be looking larger (6000 or so)? I know all the brands are good but is anyone better for packing out meat than the other? MR has the NICE frame which makes sense to me but is it better than using the others to pack out meat?