coltc2000

I personally would get a Honda Pioneer 500. slightly smaller in size, liquid cooled, 2 up, and room for the dog cage. The Mule is a very good choice as well. I just prefer Liquid cooled and 50". As well as being able to customize the rear to your tastes and/or switch it up when you want something else out back.

Rocky mountain ATV is where I get all my tires.

Union Pacific R.R. uses Kubota UTVs in there railyards here in SLC,UT so I would say they are a reliable vehicle. As for as a specific model I have not been in their yard to tell you that specific model. I see them from our Trolley cars that run next to their yard.