I am looking for a Zero Turn to mow 5 acres of grass on a hilly property. I understand that some ZT mowers are better on hills than others because of a lower CG. I want something that is easy to maintain. I am leaning toward the lower end commercial models. Haven't made up my mind if i want diesel or gas yet. I like the convenience of gas because everything else I have is gas. I am curious to hear your recommendations? Thanks JiM!