As long as you can get a 36" through most of the gates, then get a 36". Followed by a 52" stand-on mower, (scag, exmark, toro) because they are lighter and usually faster than a ztr. As well as priced less, not much, but around $1000 less.
I have a Toro t-bar proline 36" and I love it. I have a side bagger and gator blades on the mower and it did great at picking up leaves for me this Fall. I am selling it and going to buy a new one next season. It's on the delaware Craigslist.
I used a pistol grip Exmark Metro 36" my first year and the hand fatigue was horrible after a full day of mowing. The Toro also had a much better cut, but the Metro was beat up.
There is an Old Blue Chair for each and every one of us, we just have to find it.
2006 GMC Sierra 2500hd crew cab
BOSS 8'2" Power V
Hustler X-one 60"
Toro Proline 36" wb w/t-bar controls
JS46 22" walk-behind (wouldn't recommend)
Shindaiwa T254, Echo trimmers, chainsaws, pole hedge trimmer, pole saw, hedge trimmer
Shindaiwa 633 and Husqvarna 130BT blower