Commercial 72" zero turn is fast, you will feel like you are cutting grass on a go cart it is so fast.
https://www.hustlerturf.com/The decks are strong enough were you can run over shovels and hoes, horse shoes.
Buy the best, upgrade the seat with a seat that moves like a truck driver's seat. You will not live long enough to wear out the mower as a home owner.
Buy gas engines, never diesel.