There are 5 in our group. None of them have any issues thus far. One has an E-85 tune and two others have the EVO 91 tune on them. The other 2 are stock. They all have aftermarket springs (2 are smart shock models, 1 is the next level down, and 2 are base models with QS3 shocks) . I have driven my friend's stock one with the springs and smart shocks.
They are really fast from 20-70mph. The smart shock suspension worked really well, but not as good as the Polaris live value. Being able to manually down shift or up shift, if you want, makes for a different SXS driving experience. I left it in auto mode and would hit the down shift paddle going into turns. It was as close to driving a rail as you can get in a SXS.
All the cars in the 500-1000+ mile range.
The car feels very stable and it soaks up the big hits.
I did drive my friend's Pro R with live value and some Bikeman stuff that gets it to 300hp. The live value with the "oh shit" button was awesome. The instant throttle response was amazing and the Pro R handles really well and soaks up the big stuff. Pro R belts hold up.
I was pretty sure my next ride would be a Maverick R, but after driving the Pro R it has me thinking.