My 2000-era Craftsman "garden tractor" is getting long in the tooth and I am getting tired of spending 4+ hours mowing my 2 acres. What has been your experience going from an old school riding mower to a zero turn? Does it save a lot of time? A good friend put it to me this way: a new mower might cost a lot, but what is your time worth? The older I get, the more that's starting to sink in. I'd be looking for something $5K or less, but would be really interested in something with EFI if it even exists in that price range.