Toro/Exmark makes some of the best residential mowers available, in all categories. Exmark is to Toro, what Lexus is to Toyota. Exmark will be miles above anything from a "big box store" in reliability, ease of maintenance, parts availability, and noise.
I posted a review HERE of my 44" Exmark and the biggest "ding" I could give is lack of storage space.
Generally lawn tractors do better on pitched terrain. ZTMs don't fair as well while cutting across slopes because 2 wheels do all the traction and control. Cutting up-down slopes is preferable. They can be dangerous and unpredictable on slopes around the edge of lakes and other hazards. 15° is considered the max slope angle, and then only on DRY grass. Weight does improve the dry traction results.
If your terrain allows, you'll cut closer to trees with less trimming on a ZTM. And they are generally a blast to drive !
Hope this helps.