I have two, along with the whole NICE system, and had the Arcteryx Bora, the Kifaru packs and several ultralights, and have had just about everything you can think of. Dan's packs still seem to be the ones that makes the trip with me. Understand though, I'm not the one carrying the whole sheep off the mountain, as I have to go guided; but, it carries my gear for two weeks well.
Don