@steakster I can't believe you are calling out some of the biggest shysters in the industry as credible. I'm surprised you didn't include Ted Denney.
As for the rest, I do NOT, under ANY circumstances, believe that any of these companies do anything more with Quantum-whatever than misquote, bend and stretch truth, and use to deceive gullible audiophiles with meaningless word salad and pseudo-scientific nonsense. Some of the claims of these companies are so preposterous that it is astounding that ANYONE would believe them.