Due to a fire we lost all of our lawn maintenance equipment this fall. With an opportunity to start out fresh i was hoping to get other pro's opinions about what brands to consider for the small 21" push mowers. I use Ariens - 3 self propelled, 3 non-self propelled and we can only get 1 or 2 seasons out of them before they constantly break down. So, what are your opinions on the following: 1. What brand of 21" push mower do you use? 2. How many seasons does it last? 3. How many months of mowing is your season? 4. Do you use self propelled? Note: no info needed on anything but 21's. Thanks in advance.