I have had mine a little over 2 years and am very happy with it. If the price is right, I would not hesitate buying used with low hours....but you should compare to what new would cost you with incentives,etc..
Some feedback:
1)The regen is nothing to fear IMHO.
2)The size, HP, and weight are perfect for the work I need to use it for (moving manure, brush hogging, gravel driveway upkeep, snow plowing/blowing, wood chipping, etc..)
3)Mine has AG tires which were set at the narrowest setting from the dealer...tended to feel tippy. I widened them and it made a huge difference with the "pucker factor" on slopes.
4)Load the tires if they do not come that way.
5)As has been said, ergonomics and all functions of the tractor are excellent.
6)I added a grab handle to the right-side and it is invaluable. Kubota kinda cheaped out on not including as stock.
7)There is a whine to the HST which is common that takes some getting used to, but I will never go back to gear drive and I wear hearing protection regardless.
All I can think of off hand. Good luck, and keep us posted. If you get it...let's see some pics!!