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Took out a '13 SP 154 800 today, along with a '12 800 154 to compare them side by side. (I'm a dealer) I have to say, there is a noticable difference in handling from one to the other. With the sway bar connected on both, the XM was easier to to lay over, but not by much. I took the sway bar off the XM, and it was almost effortless to side hill and powder carve. I rode a 2013 PRO same day, and while similar in manuverability with the sway bar off, the Ski Doo had noticabley more power and torque. FYI, the polaris bumped a hidden log and it bent the frame! I don't mind riding a sled 40 pounds heavier to have a more solid frame with more support.