I feel the Poo is much more stable and predictable is all conditions, and as others have mentioned, the Cat is #2. If you can master the squirrely characteristics of the Doo, more power to you. I predominantly ride with a gaggle of Ski-Doo's and one of my favorite lines we pull is an off camber climb to the left with a steep drop to the right. It's a hill we pull late in the day on our way back to the trailers (tired riders) and the outcome is the same day after day. The lead rider attempts the pull up and to the left, he rides 100' or 200' then loses it and has to bail out. The second, third, fourth, through the tenth sleds usually have to bail, with maybe one managing the pull. I enjoy bringing up the rear and watching the circus. I am now officially old (60) with seriously limited skills and strength, but I can lean the Poo 850 to the left, sidehill up through the ruts, make the next left hander up the shoot and continue the climb over the mountain (with very little effort). After the ride we all have a few drinks at the bar and all I hear is why in the world do you still ride that frickin" Polaris, these turbo Doo's run like rockets!!!