Cables and interconnect performance is highly dependent on your equipment. It isn’t like the acceleration rate or miles per gallon in cars… where you can measure a the rates in both and make a determination. You get different performance with different components.
All silver can definitely be a good thing or a bad thing, For a couple iterations of my system, silver sounded terrible. My system was too far on the detailed / lean side and silver would raise the noise floor and tip it too far to the cool side. Cardas and copper Harmonics were cables of my choice during that period.
Then there are all sorts of geometries, sequences of dielectrics and different isolation methods used which change their performance.
Over the last 40 years of using high end interconnects and such I have intimately learned the sound of six brands: Cardas, Transparent, Wire World, Nordost, DH Labs, and Harmonics. These are well established, respected companies that have a consistent “house sound”, high quality control with good resale value. Through lots of reading of reviews I can evaluate what others will likely sound in my system. This allows me to chose the best for my system without resorting to completely random experimentation. This is my approach. Nothing wrong with other approaches… it is supposed to be a fun pursuit… whatever approach makes you happy.