Here is the thing that most don't consider when buying an inexpensive zero turn. They really fall into the same class as the dreaded box store mower. I'm not saying that box store mowers are bad for everyone, but if you want to stay away your choices are to go to a brand that is up the food chain, but isn't an odd ball. Out of the first list, the only one I would touch is the T1870. A high hour zero turn can leave you open for double exposure on transmission problems.