After the whoha of the Puralators I dropped the coin on the Proform. Not cheap, but the machining was very good. Cuts well (I've cut 4 so far) but leaves a sharp edge like a can opener. Overall I'm very happy with it and it is built to last a lifetime.
I do question the availability of spare cutting wheels...haven't addressed that one yet. But the wheels do appear to be the same a pipe cutter.