For years I have mowed using various walk behinds, and then a Craftsman rear engine rider with a 32" single blade deck. It took hours in the Florida summer to mow. That does not include all the trimming, raking, etc. Talk about hating it! When I finally got the LX188, My first 'real' lawn tractor, everything changed. With the time saved mowing, I now am able to spend more effort on all the other work that is needed to have a decent lawn. And, I am not beat tired when I am finished. The X540 has shortened the time even more.
Now I am looking for a larger lawn to mow with my tractor..... About half the size of K7LN's. I suppose that the day might come that I just do not want to get on my tractor and mow. (Along with many other chores it helps me with.) I just hope that day isn't anytime soon.
The Craftsman rider was a real piece of junk to mow my lawn with. My turf is not real smooth, and I believe that I would compress several vertebrae during each mowing. The mower itself seemed like it was about to break in to many pieces from the very rough ride. Both of the JD's on the other hand, handle it just fine with a much smoother ride. A strong argument for spending a bit more for a quality tractor.