I recently purchased a U.S. Products Cobra H-2. I am verry satisfied It is verry simple and easy to operate. But dont let that fool you the cleaning power on this machine is awsome! Almost instant heat at the tip at startup 212 A low moisture system at 150 P.S.I. The waterlift is 140" I will soon invest in a truckmount unit but for now this machine meets my needs. I have had my Porty since Feb 09. Is there anyone else out there that has the same machine? My cleaning method is to only run clear water thru for the rinse. Of coarse after Pre spray and scrub. I clean it after job use and have ran vinegar thru it once. To clean any build up. Any sugestions?