Originally Posted by
LDog
Packs are tough to choose because often, heavier packs are heavier because of their suspension. That suspension often allows one to carry heavier loads comfortably. But it doesn't help with weight on the knees. The lighter packs with minimum frames are really only suitable for sub 30lb total pack weights. Getting there takes a lot of research, willingness to let stuff go, and ultimately, experience.
You can often return unused stuff you decide not to use, and there's always eBay and Craigslist ...