I have spent alot of time on the 850 poo this year and my 165 expert. There is no comparison in motors. The doo has way more pull than the polaris. The polaris only feels light when you are in the throttle. At slow speeds, it wears you out. With that being said, I rode the turbo for 2 days in fresh powder. Its beyond fun. No lag, no waste gate noise, no bogging in the deep snow or pipe side. Doo definitely did their homework on this sled. Polaris is scrambling to bring something out, but, lighter isnt always better. There is only so much weight you can lose before reliability issues surface. Skidoo has been pulling Polaris around by the nose for years. Since the 96 summit, Polaris has only played catch up to Doo, and the new turbo, with a warranty, has put them that much farther ahead. I would trust technology from a company making lear jets way over 1 that makes utvs and sleds any day.
They wouldn't even be making jets if it wasn't for a whole pile of government bailouts.