I am looking at ztr's. I am trying to choose between a cub cadet z force 48 or a Gravely zt zt 2044 xl. The z force has a 20 hp Kohler command, a 10 guage Fabricated floating deck, and a pivoting front axle. The Gravely is a 44 inch 12 guage Fabricated deck,with a 20 hp Kohler Courage engine. Also the front spindles are sealed, no grease fittings. My question is, I was leaning toward the Gravely but I like the idea of the pivoting front axle. Also, what is the difference between the 2 Kohler engines? and, sealed front spindles or the spindles with grease fittings? any feedback would be appreciated. by the way, i am cutting my yard, about an acre, and another property, about 3 acres with alot of trees.