We have the Kubotas where I work. We have them in several different locations. You couldn't pay any of the employees to buy one. Ours are slow, heavy, and not real intuitive to drive. They are hydrostatic like a tractor and it's hard to get people to drive them like a tractor.
I have a Polaris 700 and love it. I have a 8'x16' flatbed trailer that weighs about 2200# when empty. I shuttle it around the barnyard, empty, with my Ranger. I also used it to pull the tractor about 50' off of the road last winter when the fuel gelled and it shut down on me.