Depends what kind of riding you plan on doing. I like the cat's for boondocking, since they feel really light and are easy to balance on their sides. I found the XP's are a little more geared toward point and shoot and tend to climb a little better than the cats, but they are harder to boondock with. Haven't had a chance to ride the new pro RMK but hear good things. The Yamaha's are awesome with a turbo and will climb anything in a straight line, but feel really heavy unless the snow is deep. I'm sure people will argue with me but these are just my opinions. I ride a cat by the way and do mostly boondocking.
