RE: Summit Revolution vs. Summit Python XLS
I have the Revolution and it's great. I'd rate it (comfortwise) as the tops I've ever used. The lumbar support is a welcomed addition.It climbs very easily and quietly, and is very stable too. Geez, I even got my wife to go 15 feet up a tree with it. (she generally ground hunts because heights bother her). She really loved the Revolution. I'd highly recommend it.