How did the packs rate as far as how easy they were to get adjusted to your body?
Stone Glacier was very easy to get dialed in, Mystery Ranch is a close second, just have to make sure you order the right size belt and harness.
Paradox isn't tough, but there is a learning curve so adjust it well at home with weight.
Kifaru was the toughest to get dialed in, but if you have used the duplex it's much easier.