I looked at the Kubota gas models and really wanted one just because of the Kubota name. It was hard to find any real support for them with those who cut grass for a living, especially over at
www.lawnsite.com I spoke with the mechanic at Kubota and he denied that there was any problems with the drive motors, but he then showed me one that he was repairing. He said the problem was the two inch ball mounted to the back of it, and that towing with them is what causes all the problems. I don't know what was towed with that mower, or if it was allot of weight, or a plastic garden trailer. I did get the feeling that there was a problem with the drive motors and the mechanic was trying to convince me there wasn't, even though he had worked on quite a few of them.
I see Scag and Exmark the most out mowing lawns by the pros. I see a few other brands, but those two seem to be the most common around here. I liked them both, but went with the Scag Wildcat with the water cooled 26hp Kawasaki gas engine for my place. I only put 120 hours on it last year and will probably put 200 hours on it this year.
My dealer sells Scag, Toro, Cub Cadet, Echo and Stihl. This is all he does, while the Exmark dealer is also an Ace Hardware store. Of the other brands, it was a mix of which ones were true dealers that fix and supply their equipment compared to those who just sell them and then tell you who to go to for repairs. JD and Kubota are both good dealers here, but I didn't think that either compared to the Scag.
If you want the Kubota, then go for it, but if you are looking for the best mower out there, I'd forget about brands and look at all of them before deciding.
Good Luck,
Eddie