With my limited budget, $2500, I have narrowed my ZTR search down to 2. Both offered by the same dealer. I have under an acre, relatively flat and want to get it done as fast as possible myself. I'm not interested in WBs and used commercials are not readily available and when they are they're still too expensive for me. Which one will last longer and be more enjoyable over the long haul? Toro z4200, Kohler 19hp, 42" or Simplicity Axion, B&S 20hp, 42".