I am considering selling my 4 wheelers and buying a UTV.  There is a guy in my neighborhood selling an older polaris Ranger, but I really don't know anything about these things, and I am hoping to get some information on what to watch for, things you should know buying a used UTV, etc.  My budget for one of these is not real high, probably closer to $3k, $4k absolute max.  What can you tell me?

Thanks!