Thanks for the review Jay. Not a brand loyal person at all, rode more Yammi than any other sled over 30+ years. Currently have (2) 2012 Pro Rmk, ride with buddy with a 2013 XM all season. We continually swap sleds during a day, so have rode both in all different conditions. As much as I like the throttle response and power of the XM, I just can't like it much due to it's falling short of the Pro in carving, sidehilling and overall maneuverability. We are both close to the same weight and he feels his set up is spot on. He likes the Pro in almost every aspect over the XM except for the power where he feels the XM shines. I would tend to agree that his sled does have a bit more, especially at the bottom end. Both sleds are stock motors. We have drag raced against each other on each others sleds numerous times and the XM almost always gets the hole shot and then the Pro hangs right with the XM's rear bumper but can't pass it nor can the XM pull away. Clutching on the Pro has been spot on, so just think that the XM has a slight advantage at the start. My 2012 that has a Northstar kit will be even with him at the start and pull away by about 2 sled lengths regardless of which one of us is riding it. Pro feels "right" for me, XM feels "right" for him and that is all that really matters.