I want a commercial grade ZTR mower to take care of three acres of grass. The grass is a mix of rye and some bluegrass, that has access to unlimited water and very dry hot Wyoming summers. It does grow fast. The "lawn" was originally a cow pasture, so it is not normal lawn smooth, but it has been mowed by various lawn tractors for 25 years. Cost of a commerical grade zero turn is not the problem, finding a dealer is. We have a John Deere dealer 30 miles a way and a Toro Dealer 150 miles away. What I need is a mower that (1) doesn't break down much , hence the commercial grade, and one that has easy access to parts, i.e. fast factory direct part service. I figure going bigger and stronger will buy me less time in the seat and less problems with breakdown, but I need good part service. I can do the work or get it done locally but I need to be able to get parts. Any ideas.