IMO get a Badlands pack. THey have an unconditional lifetime warranty, no questions asked and they are comfortable as well. They have several models and I have no doubts that therte is one that will fit your needs perfectly. They are based out of Utah and are hunters themselves so I belive they know how to build a very functional hunting pack. Give them a call and I'm sure they can steer you in the right direction.
www.badlandspacks.com