I agree with JasonsLawnCare1.
It's really hard to beat the cut quality of the Deere ZTR's, or their L&G tractors for that matter.
This is a shot of part of my back yard after cuting it with my Z720A w/60" 7 Iron II deck last week. No stripe kit either. Just the cut the mower does by itself. I cut at 3", and took off about 3" to get these results here-