I have a Polaris you can see it here.
It is belt driven and I have 3900+ miles on it now without any problems with it yet. I wasn't sure I would like the belt drive but it sure is nice and smooth. It's nice not having to shift. Mine is a 570 EFI and easily does 55mph. I use it daily in the 800+ acre park near my house. I'm the Park Ambassador which is my official city title. It stands for chief trash picker upper, trail maintenance guy and homeless camp remover. I was doing the job before I got the Polaris and occasionally drove my Kubota tractor. But the tractor was hard on my back. There is no where the Polaris can't go really. I did get it stuck once crossing the creek at a place where there wasn't a crossing. But the winch made short work of getting me out. Mostly I use the winch to pull logs and downed trees as well as park workers vehicles out. I couldn't do the job without it. I must do a good job because I'm getting an award next week from the Sacramento Creeks Council for the work I've done. I also oversee several hundred high school kids that are studying the creek. I help them do creek improvement projects.