I tried a pair of pure silver interconnects several years back and did not care for the sound as it was way too bright for my tast. I prefer copper as it sounds much more natural and musical to me.
George...Agree it is not for every system. There are many factors where silver could emphasise brightness & fatigue. At the other end of the tonal scale, I've heard systems with copper cable that sound too dark, lacking that crystalline upper frequency sparkle. Again an improper cable match.
I ask myself what is missing when trying something new with familiar material. After a reasonable settling period 24-48hrs, if it is obviously apparent that part of the frequency range is lacking, then I exclude it. I don't believe in the concept or excuse that a product can sound poor to begin with before it reaches its potential after a lengthy burn-in period. It has to be better to begin with.