The "build quality" argument around here is a joke IMO. There is NO WAY the Cat or Doo is put together or designed with any more care than the Polaris. I see a lot less plastics damage to Polaris than Skidoo for sure and have seen more problems with the Cats I ride with lately than the Polaris'.
The engine is a bit of an issue. Did Polaris really fix it this time, or is it another poorly conceived re-hash of the crap Dragon motor? Only time and use will tell. To me that is the only gamble. Other than the engine I think the Pro is by far the best riding mtn sled on the market.
For my riding, I agree with kanedog, 2 years max regardless of who built it, after that you are going to start having issues. I hope to continue my new sled each season plan but I will not be snow checking a sled, probably find a '15 holdover and go that route until we have more info on the new engines durability. I remember Polaris hanging 900 customers and Dragon 800 customers out to dry on warranty claims for crap engine designs. I am not a first year model buyer, not from that company...