First I will say that I'm biased cause I have webers... Since I've owned or driven all except for the new XP I would still go with a weber or Z1. There is no way in hell the new XP will outrun or outclimb a weber. It might keep up if you turbo it but then you lose the warranty. The weber has a 1 yr warranty. Who knows what Polaris made stronger in the XP. If they used the same garbage that is in the 2011 RZR's your screwed. The older RZR's have better axels and tranny's. The old stuff is holding up to 300hp of abuse, the 2011's are breaking with the 55hp motors. just my 2cents...bigmike