I've had this pack for about 2 years and use it constantly. I'm pretty heavy on my gear, so for anything to last me more than a few seasons is AWESOME.
The pack is easy to adjust on the fly to switch the weight between your shoulders and hips. The hip belt is detachable and padded really well so it doesn't bother you at all even after a hard days hike. The lid to the pack is removable and you can actually fasten it around the hip belt to create a sort of fanny pack.
Once loaded, it carries easily and will keep your back straight with it's nicely shaped and lightweight center stay. I can fit everything I need for a comfortable 3-5 day excursion and wouldn't hesitate to suggest this pack to anyone else.