You haven't heard of ConsumerReports.org?

Edit: go ahead and make decisions based on whatever criteria you feel is appropriate. Nobody has the time to read peer-reviewed journals on everything, and at some point you have to rely on the recommendations of your friends or people with the relevant expertise. You may feel that these techniques are equivalent to a spade or broom or hammer, but others may feel it's a large time commitment they would not otherwise make, or be too close to the realm of psychology/medicine, and require more than just "Works for me!" before trying it themselves.

As I said before, the lack of science didn't stop me either.