I have not owned a tractor mower or Z mower before. I have 45+ acres of grass w/ some hills, beds and trees to cut. Grass can be tall, 2 ft, in places. I was looking at a new JD Z445 to purchase. I just found a very good used Kubota 1999 TG1680 diesel that seems to have been always shedded w/ 220 hrs for about $1,000 less money. I like the JD zero turn, but also like the diesel. I may eventually put 30-40 hrs a year on the machine. I do not need a machine for pulling as I have a larger tractor. Your comments and advise are much appreciated.