Robertsong, I wish there were a simple answer to your question. Perhaps the pc has settled down now, perhaps not. I have never tried an all silver power cord and presently use only copper power cords, I do generally believe metals sound different, but there are many other factors that affect what you hear. I think in interconnects, silver, especially long linear crystal silver is clearly the best metal.
All that I can really say is to buy what you prefer.
All that I can really say is to buy what you prefer.