My buddy has a Pro 155" and I have an E-Tec X 154". I hate to admit it, but the Pro climbs and sidehills extremely well. Will it outclimb an XP? Sometimes yes, and sometimes no. It really depends on the line you get at the bottom of the hill, and my buddy weighs 40 LBS. less than I do. There are some hills where the Pro climbs better than my E-Tec for some reason. The E-Tec climbs like crazy if you hit the hill hard at the bottom, but like to trench when your speed drops. If you can hit the hill with the flipper pinched on an E-Tec, it will outclimb the Pro, and it has noticeably more power than the Pro. But the Pro stays on top of the snow better, and just keeps climbing. The Pro will be the sled to own, in my opinion, when Polaris gets into the HP game again. The Pro with 160 + HP would be unbeatable. I can't imagine riding a Pro with boost, that thing would be nuts. That being said, I really like my E-Tec. This sled has made me a better rider. The harder you ride it, the more fun it is. These XP's are like dirt bikes, they like to be ridden wide open with one or both skis in the air, with the flipper pinched, tearing into a sidehill or some gnarly, technical hill. Life is good!:face-icon-small-hap