David, I was not the least bit insulted. I think most things can be measured. Maybe not by me at home, but it can be done. That being said, if you read a review, and something tests better on paper, it doesn't mean that it will be more pleasing to me. (or you for that matter) The fact is, I believe you should be able to test something and show it makes a difference. Good or bad, who's to say? What I enjoy, you may not, and vise versa. I might love something that tests poorly. The claims by sellers that have no reviews, or scientific back up, seem a waste of time. I'm always willing to listen, but i'm a sceptic. Someone that thinks it has to help, probably hears something different. If thats the case, for them it does. Myself, I have a real hard time spending money on those things. I wish these posts could go on without the insults that always end up ruining the discussion. I'm afraid my answer earlier may have seemed like it was directed at a single person, or company. It wasn't. For that, I apologize. It just happens to be what came to mind. The people that sell these things might be very passionate about what they sell. I would love to be able to have one of them come to my home, and set their stuff up. If they could convert me, anything is possible.