I had a 12 cat last year and rode with multiple 11/12 pro rmks the last couple years. The pros are a very nice sled, but there are a few things that didn't suit me as well as the cat. The tunnels can't take abuse like the cat can, the pro rides a lot rougher than the cat, engine reliability, power, lack of knowledge working on polaris, doesn't feel as good compared to the cat (for me), and the throttle pull of the Polaris (have a bad thumb). The Polaris does have its strong points though. It has the best stock deep snow skid, light light light weight, belt drive, much improved running boards for 13, very skinny plastics, and it sidehills great. You can't go wrong with either sled, but I have a 13 pro climb snow checked for 13.