I recently got a Lightwave Wildtrek 60l [same manufacturer as the Crux AK47]
Only used it once for a short hike so far, but Im already more impressed with the back system/Hip belt configuration/Lumbar support than others Ive owned.
It just seems to 'fit' better. To be more tailored, especially around the waist. It has a double strap system on the waist band.
Light and sturdy too. I also dont miss the side pockets. I quite like the alpinist style.
After years of carrying Karrimor Sabre 75, Norrona External Frame 100l, and others....I also quite like that it has none of the overt military overtones.
I should be able to comfortably carry a fifth of my body weight, about 18kg, for a week, 80% on the legs, rest spread over the shoulders/back.
This was a 'bridge' pack for me, somewhere between superlightweights and Mil spec. An all rounder. Hopefully To be used in different enviroments.