I just bought a Barney's frame backpack. I have two options for bags- the Pinnacle at 7500+ cubic inches or the Hunter pack at 5500+ cubic inches. The sales manager said he sells 10 Hunter bags for every 1 Pinnacle bag, but I value all the opinions you guys have, too. As a side note, he saidn you have to take off the meat sheld to put on the pinnacle bag. What is best and why?