Well, as much as I hate to admit it, I think stock for stock the xp will give the 1000 a run for its money. My buddy has a brand new xp and I have a 1000 from last year. Mine has the y-pipe, can, head, and fuel pressure regulator. We were in Cooke this weekend and he and I are about as close in weight and riding skill as you can get. My 1000 would beat the xp, but by no means was stomping him. That little 800 sure does climb. I like the way my M handles compared to the xp, and even he commented that the xp is more flat handling than his rev was. Over all, he likes the sled and it seems to work very good.