Randy, yes, I am very happy with the Eberlestock packs. Especially the X2 which I use as my daypack and for the first trip out after a kill. Are there better packs? Absolutely, and I wish I had one of them, but they are a lot more money. Someday maybe I will bite the bullet and fork over the big bucks for a top of the line pack. If I did more bivy type hunting I would for sure. But for my style of hunting, overall I've been very happy with the Eberlestock.
I think I did stop once on each of my trips out with meat/antlers. Even then, it wasn't that the pack was killing me, rather just that my feet and legs were feeling the pain. So I'm not sure a different pack would have made it any better.