We use an Exmark Vantage, 52" (stander) on all our residential properties. Average lot size is 12K before improvements. About 90 do not have gates; two man crew; in 4 days.
We can also use a Z, Toro on these lots as well. Z is obviously faster; but typically doesn't make the job much quicker than the Exmark; at most 30-45 seconds; but time does count.
The exmark stripes well; but I would not purchase another one; at least not with the ECS controls. I've heard great things about Wright; but dealer support is why we went with Exmark.