ChoppyChoppy
Tree Freak
Though zero turn mowers are fast, i hate having to keep both hands on the handles to make'er go.
If you mow next to or under limbs, you can't lift or push a limb out of your way and still drive at the same time.
.
If you have normal sized hands you can hold both controls with 1 hand. At least that's how I've done it on my mower, and the couple others I've run.
A ZTR will mow the best being that's what they are specifically built for.