Buy one and don't look back. Great mowers. Wish I woulda saved up a little bit more and bought one. The decks on them are a lot better than the one the Z4 I ended up buying.
Put about 20 hrs on a demo unit and liked it a lot! Was very comfortable to drive and the cutting performance was surprisingly good. I myself am considering a Fastrak SD or the XOnei right now. The XOnei is $1000 more and it looks like the main differences are the seats and the hydros. Haven't made up my mind yet.