I am in the market for a ZTR to handle my 1 acre yard. I have been to the box stores and compared them to the lower end of the commercial / residential lines of Hustler, Snapper, Simplicity, and Bobcat. Most of the mowers I have seen are in the $4000 range with the major difference being pump wheel motor assemblies. One take is that it will cost you about $1000 to replace an EZT if it goes out whereas the cost to replace a Hydro pump alone is about 50% less. What are the other differences in these systems that I should take into consideration? I have narrowed it down to the Snapper 350Z (separate pump and Wheel motor) and a Hustler Mini Fasttrak 42" (EZT). I appreciate your feedback.