Do you already have the 235 or you looking to buy a new one? Not planning on using for tilling [or other ground engaging] I presume?
The reason I ask: the GT235 I'm thinking of is around a $5K machine. Ok, here's the part where I can be a broken record [but I admit it up front /forums/images/graemlins/crazy.gif /forums/images/graemlins/grin.gif]. For 5K you get into the commercial grade ZTRs. Actually, right at 5K are a lot of transition machines, but if the territory can do with a 12gage deck instead of 7 or perhaps integrated pumps instead of component systems: good values there too. Getting into the 5's you start getting true commercial grade...after that, the sky's the limit - both on features and price!
Joystick or twin hand controls....less mowing time (1/3 to 2/3 less depending upon obstacles; the more obstacles, the more you'll appreciate the Zturn)...and the only foot issue you need to avoid is some brands have right foot assisted lift!
Of course; if you already have the garden tractor, I say go for it! /forums/images/graemlins/cool.gif
Good Luck!