I used to work for a company that had 6 landscape crews, each crew with 1 zero turn, 2 walk behind hydros. We had always used Scag, tried Exmark. Exmark was a good mower but the dealer was not too good and too far away. So....... some ding-dong convinced my boss to buy a couple of John Deeres with the 7 iron decks. Total crap. Parts ALWAYS had to be ordered because so much on them changed from year to year. I convinced him to return to Scag and has been much happier. Not only does Scag have great parts interchangeability from model to model (some even zero turn with walk behinds) but they have a vast dealer network. Even aftermarket parts abound for a Scag more than any other mower brand I've worked on. Since returning to Scags his parts overhead is less and operational costs are significantly reduced. Last I remember, Scag jumps from a 52" deck to a 61" deck.