I just got a new place with about 9 acres of cleared land. It has gently rolling hills and I want to mow as much as possible on a regular basis. I have researched and found that a ZTR commercial mower would probably be my best choice. I need a recommendation between a Toro Z500, Exmark Lazer Z, and a SCAG. Or if you don't think I need a commercial one, please let me know. Any recommendations are greatly appreciated.