I am needing to purchse a new aerator asap, nd the dealer nearest me carries the Plugr aerator. I have demoed a smll unit, but never the large unit. I thought it was great, although it does not have drive belts or chains. Has anyone used these before? Good or Bad? Should I go with a different brand? I have used the Ryan and Bluebird before, and those things just bet the snot out of ya IMO.