If you want a trouble free mower that will last for years Toro 20090 Push. They are light weight and you won't have a mechanical issue with them. It will run you close to $500 with bag and big box stores don't carry it. If you are in SJ I would recomend either SJ Mowers in Maple Shade or Robey's in Medford.
Like clockwork every other year my neighbors has an issue with his Toro personal pace mower. Usually just the drive cable failing. An easy fix, but a PIA none the less.