Doing some crude market research, thanks for your input everyone. What do you look for when purchasing a backpack?
I recomend looking here, they have everything I look in a pack and associated equipment. I have yet to find any company make a better or more versitile pack than Kifaru. My experience has been with the X Ray and Express with E & E.
https://www.kifaru.net/
https://kifaru.net/militarypacks.htm
https://www.kifaru.net/tacticalpockets.html