re: Zero-turn mower rec. - 4K or less

You will not get what called a true commercial grade with a Perkins transmission. You looking at $7k on up it is a different animal.

Dollar for dollar right under $4k in a 60” smaller decks a lot less which puts
you in a large property owner machine or prosumer unit a lot better true commercial type frame with better warranty along with anodized & power coated better than Hustler.
For the price wider tires in larger deck rides better especially on s slight slope and unit balances better than Hustlers. I find the seat is a lot more comfortable The cub cadet ultima ZT2 with hydro gear ZT-2800 transmission which step up from residential line stays cooler last longer along with being serviceable, welded deck, 3 yr no hour warranty, and a dealer Peddlers in Mississippi that can service you.

I sell both just my stores are not local to you and my put them side by side dollar for dollar and they go with the Cub Cadet. At that price point they hit a home run. My hustlers are sitting in that price point the Cub Ultima nice unit. Cub going to come in a few bucks less for better unit in that class. I do not get a lot of service issues off that bat which I had with hustler especially if you buy it at Lowe’s.