I have the 2013 Summit XM 154 800 etec. I've put nearly 1500 miles on it so far and it by far the easiest handling sled I've ever had. I love the Pro RMK, don't get me wrong, but don't talk smack until you ride this thing. It's wicked awesome. Even most of my Polaris die hard buddies get real quiet after they carve a few turns on my Ski Doo. Had one guy sell his 2012 RMK and go get one.