Used to run an L & G department for years at Sears - was number 1 in sales for a couple of them.
Buy a Zero turn... you will eventually wish for it and it saves time and hassles.
Do your homework on the engines, horsepower and reviews plus versatility if the model uses attachments.
But regardless of which you buy, the KEY is maintenance, maintenance and maintenance.
You MUST be habitual about maintaining the engine as it is recommended.
Do NOT get cheap on a major purchase like this, change the oil, use correct fuel and additives, change plugs, belts etc...
The money I saw wasted because people left fuel in tanks over the winter was ridiculous. I of course made bank on it.