Wanted to purchase a zero turn for 3 to 10 acres of lawn. Not planning to mow multiple yards, so wanted to stay under commercial level mowers. Did want quality 60 inch cut, ride, service, and longevity in the mower.
After demoing a number of models that offered upper residential, semi commercial options, the Exmark Pioneer S with Kohler CV740 27hp 60-inch cut won me over hands down.
Rode smoother with larger wheels, better handling/speed/turning with upper end 3400 hydros, and gives a great cut with ultra cut 4 deck.
So far, the results have lived up to my expectations. I especially like the off set deck as I have some trees and landscaping to mow around. I also am impressed with the traction I have on sloping areas my lawn. No slips to slides on dry or wet conditions.
At this level, each maker has a mower that will compare and meet a lot of your needs, but for me the Exmark is the best for the money you are paying.