I have 1.5 acres to mow the house lawn (Kubota is for the other rough llama pasture 3.5 acre)
Cub Cadet several years ago had a sweet zero turn, but stnd riding lawn tractor. The I-series.
I've got one and I love it, heavy duty, outlasts anything from sears 3x over.
standard steering wheel, with twin rear hydrostatic transmissions, and front wheel are gear driven to turn past 90-95 degrees from steering wheel linkage.
sweet set-up.
Cub Cadet - Zero Turn Riding Mowers - iSeries Tractors
I've got the largest of the series with triple blades, makes for a nice smooth cut............I need to mow it anyways, so I'll give you a before and after cut pics.
https://www.cubcadet.com/wcsstore/ManagedContent/CubCadet/en_US/media/ZZ010_iSeries_SellSheet.pdf
here is a fast time-lapse video of a 1/4 of my lawn area showing off my I-series.......note middle of video my tight pivot on one rear wheel spins....
https://vimeo.com/53454160
I simply didn't like the twin hockey stick zero turn mowers with the passive little shopping cart wheels up front. So I went with that I-series Cub Cadet. Held up great the last 4.5 years of use, and it has zerk fittings everywhere......