If you think you heard of all silver cables then you haven't hear them all. Silver is not neccessary brighter than copper as it is really down to the design. Shielding has a lot to do with impacting the sound as well. Most of interconnect are not properly shielded.
It is not one size fits all so don't expect just use 1 size of the solid core to make the cable.
From my personal experience, there is noticeable
differences between the 3N silver (99.9) vs 5N silver (99.999 ) for audio. The more pure silver the more clarity. Purity has nothing to do with brightness as some folks might mistaken clarity as birghtness. As far as connection termination goes, the differences is not as great compare to the material and the design of the connector iteself. I found the Eichmann is best for the price in terms of sound and performance. The WBT connectors is still very good but takes few hundred hours to break in. Never use exotic connectors like the big "B" brand. Cardas silver and gold are good budget connectors and can work well if choose the right cable design. They are lack of clarity compared to Eichmann and WBT. Neutrik connectors are good as well if you are looking for darker tone.
It is not one size fits all so don't expect just use 1 size of the solid core to make the cable.
From my personal experience, there is noticeable
differences between the 3N silver (99.9) vs 5N silver (99.999 ) for audio. The more pure silver the more clarity. Purity has nothing to do with brightness as some folks might mistaken clarity as birghtness. As far as connection termination goes, the differences is not as great compare to the material and the design of the connector iteself. I found the Eichmann is best for the price in terms of sound and performance. The WBT connectors is still very good but takes few hundred hours to break in. Never use exotic connectors like the big "B" brand. Cardas silver and gold are good budget connectors and can work well if choose the right cable design. They are lack of clarity compared to Eichmann and WBT. Neutrik connectors are good as well if you are looking for darker tone.