John Deere Z920R or Z920M is what you looking for with 48" deck.
The R series is has the comfort and convenient package with it, much better seat, push button hydraulic deck lift on controller, push button deck kill on other controller.
2014 John Deere Z960R with 7 Iron Pro Deck
029 Farm Boss, MS291, MS391
FS85R, FS110R, FS130R, FS250R
(2) EU2000i Generators
HU800WH 22" Self Propel Push Mower with Honda Engine
HU625HWT 22" Weed-eater on wheels.