On the face of it, his would not seem to be the machine to buy - cold/warm water, single vac .................
But the machine itself is only part of a complete system comprising of machine, tools, chemicals, heat and operator.
Derek mentioned adjustments to the cleaning pie; it is the correct application and balance of the various elements of the clean that determine the end result, whatever machine is used.
One other factor, with no disrespect to any users of the CFR, I do believe that it is probably the most idiot-proof HWE on the market.