Well here is why I bought it. It is all gear drive. I have worked on a few of them and it was replacing the belt. Everyone loves polaris but I have seen a lot of people with them and always have had work done on them. Honda makes the 500 like mine an 800 and a 1000. Mine is small I can put it in the back of my short bed truck and go. Mine has either an automatic or manual shift. So if the kids drive it I put it in auto and don't have to worry about them over revving. Top speed on the 500 is about 42. My neighbor has the Kubota diesel and it works well. I am not aware of the other diesels. What else would you like to know