That's like saying what is the best Caliber for elk hunting. Ask 10 different people on this site what the best pack is and you'll come back with 12 different answers. It is purely subjective to each person on what their desired qualities are. Do you want as light as possible since you will be covering the elk mountains yet still capable of hauling out some quarters even if it is not as comfortable, then get a Kuiu. Do you want bombproof along with a higher price, but more weight, then get Kifaru. Do you want something in between, then get an Exo, Mystery Ranch, Seek outside, etc. You will have to go into more specific detail on what you want in a pack otherwise you are going to get the usual recomendations of I use this pack and I like it.