@questforhifi I have several of the Puron conditioners and 3 of the swiss digital fuse boxes. They have had a a very positive impact on my system. I'm sure you realize there isn't an objective measuring system for these type of products, so I'm not sure what you want. The lack of these devices on the resale market speaks volumes, in my estimation. But, you could do something outrageous and try one. You can send it back if you don't like it.
@normb The different metallic combinations in the sluggos make it possible to "tune" your devices. It is amazing to me the difference between copper, bronze, rhodium and the composite sluggos.