I am currently using cheap push mower that i have borrowed to begin my business and must give back. I need to find a 21" or slightly bigger push mower w/ a bagger. Possibly a self propelled model. Should i by one used for now or get a middle of the road push mower from a dept store or what? I only want to spend a couple of hundred dollars at most if buying new or less if used maybe????? ANY SUGGESTIONS?