Hi,
I have two, use with tanks supplied for commercial. Never had a problem with them, i get good results with rotobrite 2 with chemspec energiser added. Use a scrub pad on one machine followed by the other machine with ordinary pad on large commercials. Pad and chemicals from restormate too. Suuround is supposed to be good from restormate but iv not tried it since im happy with rotobrite.
Return on investment can be excellent!
Andy