RCA cables silver,gold or copper whats better?

Silver plated uranium with copper connectors. Incredible sound.

I'm with 4est. I find mixing helps. I have one cable that is silver-clad solid copper with copper connectors. These have the best HF extension in my system. Another cable is solid silver with copper connectors. These have very similar sound to the other cable but are shifted down in frequency. Better bass and lower midrange but not as extended up top.

Silver cable with silver connectors can be a very vivid presentation to say the least. Too much for me. But the same cable with copper ends took the edge away and gave some depth. I haven't found a cable or connector using gold that didn't sound a little too dark for my taste.

Hybrids. UP-OCC copper and silver in the same cable. Stranded and solid core wires of various awg. No single metal can "do it all".

I use upsidasium plated wire.

The sound seems to float in mid-air.

Very interesting, Bill. I have discovered that Resolutium does wonders with low-level detail and dynamic contrasts.