I just picked up a 21 today after having a 20 for a year. My 20 had problems, hence the 21. But the 21 feels a little more polished in a lot of little ways. I swear there’s a few more settings I never noticed before. I like the interior better too - there are some accent trim changes for the better that makes it look nicer for sure. The seats are more comfortable too in my opinion, like the filling is better. The tranny on the 21 seems to shift better for me but that could be the way it’s learning. Still a beast, either year. Motor pulls strong.