Looks like I stired up a hornents nest lol! Dargo it sounds like you are profesional landscaper.You want speed for all your jobs and a 4 wheel steer lawn tractor is not the answer when your tring to cram all the lawns you can in a day. you said it they don't produce wich a key element of making money. Yes 4 wheel steer is not for everybody. It was just merely a suggestion. I have been to a demonstration where a saw a 48" zero turn go up against a 48" 4 wheel steer and not keep up. Keep in mind this a demo designed to highlight the 4 wheel steer's capability. It is not a speed demon by any means but when cutting around TIGHT obstacle you will tear up grass tring to stay with a 4 wheel steer. I guess that is what I should have said.
Valley Dueller, you know what your up to then. Good luck