I'm looking at purchasing a consumer Z for a 3 acre yard. The dealer I prefer to work with has Ariens, Simplicity, and Exmark models. I know the Exmark is in a "different class" but it's also a good $1200 to $1500 more. Models in question: Simplicity ZT2050, Ariens Zoom 2148, Exmark Lazer Z CT. Any thoughts on value for cost difference would be appreciated. Also... regarding the Exmark any comments on the 18 Kohler vs. the 19 Kawasaki appreciated.