Terry,
Yes, I agree the assumption is safe. But I understand the reason some people prefer regeneration, others prefer filtration, others balanced transformers, etc is because the way in which the AC is filthy at different locations varies. I'm trying to determine in which way my power is filthy so I know what to look for as a solution.
Trying at home is not an option for me, or at least not a practical one. I can go ahead a buy something, but I would never know if that unit was the best I could have bought, and getting a second unit would take me about additional 6 months...