My father in-law has a kubota ZD26 72" Z-turn. The only thing I do not like about it is the lack of response in the controls. I have used ex-mark, woods mow-n-machine, toro. All of them had great response. The only thing I have done so far to help is air the tires down from the recommended 25psi (or 20) down to 10. A little more bouncy but much better response.

Mowed 4-4.5 hours on 2 gallons of diesel