OK, it looks like it's gonna be between the Maxped Condor II ( I really like the shape of that pack) it will be big enough to meet my needs without being so big I will carry WAY more than I need to, and the SOURCE Tactical Gear Assault pack. Comes with a 3L bladder in the pack. IF it is made of sturdy enough material I might well get that one instead of the Maxped. We'll see.