Frameless packs are not for everyone. They require very low weights and considerable attention to how one packs it. On a recent 4-day 50 mile trip I used my frameless pack but the total weight never exceeded 20lbs. Even during the trip I had to be very conscious about how I packed the gear in it. If I didn't pack it correctly, it didn't ride well. When done properly, it rides like a dream and I barely even notice it is there. Packing the pack correctly is paramount for all packs to maximize comfort. The more hefty the suspension in the pack, the more forgiving it may be for less than optimal packing.

The more trips you do with your pack and gear, you will eventually find the sweet spot for how to pack your gear in whatever pack you choose. You will know when you find it, as the pack ceases to be a load on your back, but instead just part of you.