I mow 3.5 acres of grass at my residence. It is a combination of Bahai, and St. Augustine. I have narrowed my choice to two ztr's. Please provide advise on these two choices. First one is a Cub Cadet M50-KHS Tank. This unit is priced at $5000.00. The second is an Exmark Lazer HP with the 19 HP Kaw. engine and 46" cut, priced at $6000.00. I don't mind spending the extra money for the Exmark if it is the better choice of the two. Thank you in advance.