I am going to purchase a walk behind mower for personal use, and maybe a few side jobs to help pay for it'. I have decided on a 48" gear drive mower with a sulky. I am leaning towards an Exmark with ECS controls and 15 HP Kohler. I have looked at a Yazoo/Kees but due to the ECS controls on the Exmark, I believe I will get that one. Is it worth paying extra for the Kawasaki V-Twin over the Kohler? What is the advantages of one over the other? Would this be a good mower for me? I am mowing a little over two acres with some steep hills.