One thing I keep forgetting to mention concerning mowing with a Zero Turn mower in high grass and weeds is the vulnerability of the electric PTO clutch that is on most ZTR's. It 'hangs down' on the end end of the motor crankshaft and usually 'slots' into a torque reaction cutout in the mower frame and has a 2 wire electrical lead that plugs into the clutch itself.
Those electrical feed wires and just hanging under there and are really prone to getting snagged by weeds and such that don't get cut off and spring back up and snag the electrical feed wires for the clutch assembly and if you are not lucky they will pull out of the clutch assembly and that will mean buying a new clutch and they aren't a cheap date by a long shot. Had that happen on my sold M60 Tank and a replacement clutch assembly set me back over 300 bucks, 5 years ago. I hate to think what they cost today.
Just be aware of what is 'hanging down' on the back end of most any ZTR and what it might cost you if you rip the wires out of it by snagging them on a springback weed mowing high weeds or grass. Easy to replace. Not so easy on the pocketbook however.