Hey Rokslide, just got a hold of this pre-release from Seek Outside on their new (big) backpack- The Brooks (the pre-order will be available exclusively through another Rokslide sponsor, Argali Outdoors soon.) This is a 7400 cc highly configurable backpack weighing in at 4.5lbs.
Andrew Jakovac knows packs and said after 5 months of testing the pack this one of the best backpack he's used.
See for yourself what he's talking about in the video in post #2. I don't think you could find a more descriptive video on all the pack's benefits and features.
I've invited Andrew on to this thread to answer questions, so post up any if you have them.