Retiredguns, thanks for your service.
I have the SD60 and went with it for the engine guard, the extra wide tires front and back and as important was the extra comfortable chair. The total of the extras bought separately got me a 60 inch cut and all the upgrades for less.
There are three expensive commercial Hustlers within a block of me and none of them ride as nicely.
They can kick my butt in ground speed. But, with the wider cut, it evens out in time per acre. So, not too displeased with the slower role.
The seat was worth it though when you get ready.