I think it comes down to what your used to, and what you learn how to ride... Dealer is a big part too though. I have a 2011 Summit, its worlds better than my 2010. It was akward riding it at first, but now I wouldn't trade it for anything. It has ran flawlessly for 1200 miles, and I mean flawless, hasn't sputtered, backfired, bogged down, nothing. Haven't had any warning light of any kind come on... which is rare for an XP. Sounds like other people around here haven't had as good of luck, alot of people have lights coming on left and right. So I don't know what I would do if were you, the Pro sounds like its been a pretty good consistent sled, but at the same time so has Doo. In the last Sno-West mag they made it sound like its pretty much a toss up between the Pro and Doo, I haven't ridden the Pro so I don't know. If I were you I would try to get a day of riding on each, and go from there, but if not flip coin or something! Doubting you'll go wrong with either, its all about learning to ride your sled and being used to what you have.