I was really happy wih my 60 gal. 2stage that I picked up several years ago. It was sold under a speedaire name, but is a Campbell Hausfield machine. It handled anything you could throw at it,,,until a wek ago. I'm trying to figure out why its overloading the primary side and tripping the safety valve.
I think a valve plate went bad
and replacment plates and gaskets are about $150.00.
I dont want to buy a new machine, but if I do, it will definately be another 2 stage, belt drive. I've looked at them in Home Depot and Lowes and run about $1100.00. IMO 2 stage belt drive, 60/80 gal is thee way to go.