I have a Toro self propelled homeowner model. Bought it used 4 years ago for $75. I put about 100 hours a year on it. Regular maintenance only. The mower I replaced was a homeowner Cub Cadet. It was 8 years old, mowed about 100 hours a year, and regular maintenance only. ( gave that mower to a friend who has done nothing to it and has mowed with it for 4 years) The only reason I replaced it was so I didn't have to push anymore. I still have a Poulan Pro 21" for a back up. Bought it to replace the cadet, but didnt like the way it pushed so kept using the cadet. IMO, commercial 21s are overrated!