Two in our group bought new 2023 Polaris RMKs. One has pull start, the other electric start. SHOT is so much better than either one.
The new 10.25 Doo gauge is so-so. It looks good, but the Polaris gauge is better. The Doo gauge has no buddy tracking and it's trail mapping is inferior.
The Doo tether is nicer and smoother to use. On the Polaris, the plastic section where the tether is located looks like it will pull off each time you pull the tether off. The plastic flexes quite a bit and the tether release is not as smooth as the Doo's.
The stock Doo rail scratchers are much nicer than the Polaris ones. The Doo ones will not break if you go into reverse with them down.
Doo's Linq system is better than Polaris's latest attempt at a tunnel system.
Polaris has much better stock storage than doo. Doo's stock storage is small and the shape makes it less useful.
Polaris has less rotating mass and lower rotating mass than the Doo. Polaris uses a belt drive and their secondary clutch is lower than the one on the Doo. All that means the Polaris is easier to maneuver.
Polaris's body panels are much easier to remove. Doo just can't seem to make its hood easy to take off.
Polaris has a vertical steering post, Doo's is more laid down. You can add post-forward on the Doo to get it more vertical, but even then the Polaris will be more upright. Some like a more upright post. I'm fine with the Doo's once you add the post-forward.
Motor - the Doo is smoother and more refined. Has more low and mid grunt. Polaris seems to have more upper end grunt.
The Doo has a decent removable snow flap, the Polaris has none. In harder or low snow conditions getting to the mountains the Doo will run cooler and the hyrax will be happier. There is an aftermarket snow-flap in the works for the Polaris.