HydroGear EZT Transaxle

I'm wondering if anyone on these forums has owned a ZTR with the EZT trannies and has had to have one repaired or replaced. If so, how many hours of service did the ZTR have on it, how large of yard(s) were mowed with it weekly and how much did the repair/replacement cost. Many users that are mowing 4-5 acres weekly(and in some cases mowing commercially with even heavier usage) consider buying or will buy a ZTR with the EZT because they are less expensive than those with ZT-2800, ZT-3200, ZT-3400 or ZT-5400 HydroGear trannies. My understanding is that the EZT is designed for "light homeowner" usage(< 1-2 acres weekly) and myself and other users discourage buying a ZTR with EZT's if you plan on mowing more than that. I'd be the last to recommend spending more money needlessly, so I'm hoping that this question may draw out some replies from users that have owned ZTR's with the EZT that will either support or dispute the ability of the EZT to handle heavy demand usage.