Pack/Hydration

I probobly missed this and its probobly been answered already, but I just have to ask it. Does anyone know any good packs that have a good amount of empty space along with being camelbak adaptable? I was looking at Kifaru and the Scout, only problem is the price, I guess that the price will be expensive no matter where I look. But overall I am just looking at this for hiking and jogging. So I would really like it to be between the size of the Camelbak HAWG and the motherload with a resonable price. I used to own the HAWG until the airlines lost it along with my luggage, but one thing i found was that when the bladder was in the pack it pushed against my back and made jogging unconfortable.
Thanks for readin,
Chris