Here's a couple of good packs that you might want to check out.

I use and Osprey Aether 85 now.
Osprey Aether 85
It's the most comfortable backpack that I own. But it's not a hunting pack.

I've been considering buying a KUIU Ultra 6000 pack
KUIU Ultra 6000
Looks very tempting.

KC




Wind in my hair, Sun on my face, I gazed at the wide open spaces, And I was at home.