Gary, had the pro custom for a few weeks now- its 400psi enforcer spec with 2 series electros 17hg/117cfm i think it claims.
The powerflite was a pretty good machine, main downside its almost as tall as me lol! And weight distribution is not as managable as the airflex which is a dream to manovre. The vacuum sounded weaker at 50ft then my steempro, and recovery tank cut off was only letting me use half that recovery tank
Big pro to the powrflite is the heating systems, some say its a problem trapping heat etc all i know is it got steam out the jets at 50ft from tap cold water at 250-300psi 2*1.5 flow jets.
Hope that helps