I picked up our new Z915e yesterday.
It replaces a Kubota Z723.
Hands down, flat out, no question - a much nicer machine.
I keep finding things I like better about it everytime I look at it.
Grease zerts in the spindles, a deck that discharges most of what it cuts, quieter, easier and more responsive sticks, availability of mulching blades, the list goes on.
At home with hour 1 on the meter. (Sorry in advance, using my iPad and I have no control over how the picture will be orientated, just guaranteed not to be right side up)