Got a new 2012 Switchback 800 Pro-R for the upcoming season. I was surprised at how nice the stock ski's look on this sled. I had a pair of USI X2 Triple Threats on my previous sled and liked them quite a bit. My question is how well do the stock 2012 Polaris Switchback ski's perform? In other words, should I consider trying them out OR should I just move the USI X2's over to the new sled on day 1? Thanks! Jim