I have been looking at both the Cub Cadet RZTL54FAB 54" and Troy Bilt Mustang XP 50" ZTR mowers. I have 5 acres but will be mowing about 3-3.5 acres. I'm a first time buyer and don't know much about either one! They are both under $3000 which is my budget. The Cub Cadet has a Kohler 24 HP V-twin...