I've spent the last couple seasons riding with a guy with a piped well tuned M1000. He would kick our butts all over the mountain when the snow was stiff. When the snow was over our hoods he was always having intake issues, the Pro's ran great. When in the tight trees he had handling/bulky sled issues. The guy's who could ride their Pro's were always trying to find where he bobbled last and help with the digout. He was swapping belts from morning to sundown. I've always been very performance oriented with my sled and have rode a UBR-900 VE Polaris since 2004, it has been a very fast and fun sled. Polaris closed the gap enough with the Pro that I broke down and bought a 2012 155. From what I've seen so far it looks as though Polaris may have picked up the performance a wee-bit over the 11's. The Pro's I rode with last year were pretty much gas and go, easy on belts, good fuel economy, ran fantastic in the powder, even when it was over the hood. They have factory recommended clutching that is really hard to improve on. Everyone I know that rides one has a smile on their face. A couple things need a little work, couldn't stand the handlebars, had to switch to 5" rise RSI's. The stock bars are way to wide and high for my liking. The acceleration through the mid is a little lackluster, but I might just be expecting a little to much coming off the 900.