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
Chain Saws: "1973" 015 Mint, 029 Super Farm Boss, MS291, MS362C-M, MS441C-MQ with R Conversion
FS85R, FS110R, FS130R, FS250R
HU800WH 22" Self Propel Push Mower.
HU625HWT 22" Weed-eater on wheels.