Depends on what kind of hunting you're doing and if you're going to be quartering your kill and packing it out in it. I just boughtthe smaller two pieceeberlestock which has the quick draw feature for carrying your bow. Very well made pack, certainly better than any camelbacks I've had (and I've had a lot of them). For me, my primary game is elk and unless we're damn lucky we quarter them up and pack them out.But we generally go back to camp for pack frames and one internal frame pack for loose meat. Internal frame packs can get real nasty after you pack out a few animals in them unless you're diligent about cleaning them out.
Being a former eastern whitetail hunter from Michigan where you generally have pretty good motorized access to kills and can take them out whole, I would go for a smaller pack like I have.
The just one to me would be for serious backcountry hunting in the rockies.. but then it might also be good for packing in a tree stand elsewhere. Point is I guess Eberlestock makes some well made packs from what I can tell..
Saw this on sale on Sierra Trading post.. looks like a good price
http://www.sierratradingpost.com/Eberlestock.html