Zaikesman, the stuff you posted from PFO strains my credulity. I think of myself as empirical in the best sense of the word and that hearing a difference in an A/B demonstration is sufficient. Peter Belt's stuff, however, has never been available to me to complete such tests, so I have never tried any.
I cringe when I read some reviews which ask for leaps of faith and merely trying the products. I heard the very positive impact of the IC in a demo at CES and have been using these since. I assume there is a scientific benefit to why they work and have made no great effort to keep up with the interplay between mystic explanations, scientific explanations, and simplistic criticisms of both by pseudo-scientists. But the pen is just going too far.
The CLC, is somewhere in between. I had hoped for a demo at CES and understand why there was none. With the number of credible people embarrassing it, however, I may venture forth. With the Bent pen, however, there is little chance.