A Wright will make up time around obstacles. So even if you have a large area to mow, if you have alot of obstacles the Wright can be as quick or quicker than the ZTR because of its nimbleness. I have mowed our property with a 61" Bobcat ProCat, a 61" Ferris IS2000Z and a 52" Wright Stander. It takes 45-50 minutes with each machine. Doesnt matter which one. The stander has a smaller deck and lower top speed yet it keeps up. Now if you have wide open fields to mow then the ZTR with a higher ground speed and bigger deck is going to win...or a Stander ZK.