I keep drooling over the Kifarus, Stone Glaciers, etc online. My sheep hunt last year was with a Bora 95, mostly because I got it free from a friend who's backpacking days are over. I plan on using it again this year (I'm cheap!). It worked well with a side access zipper and long pockets on the back for scope/tripod. The empty weight isn't too bad either. I cut off lots of extra straps, zipper pulls, etc.
My boots did get upgraded and I figure a little misery with a pack is ok for awhile, as long as my feet are good. I'll also get more use out of the boots for multiple activities. A hunting pack sees uses limited to backpack hunting.
A good pack/rain cover is a must for me. Works as an emergency shelter to curl up in. Keeps gear dry (especially by covering your pack overnight), and if large enough, even goes over your entire gun to keep it dry on the pack. It is also a very easy way to change the color/camo of your pack since those camo packs seem to be way more expensive.
