Thank you for sharing your experiences. What is the equipment you are using. The effect is highly dependent on your system. There is a place to show photos and ID your components. Which is really helpful for forum members to understand where you are coming from.
Have you ever borrowed some really good cables or interconnects... for instance something in the $2K range? Cardas, Transparent, top of the line Audio Quest. I have found that cables and interconnects in the shallow end often are just not very good. I think Nordost is known for this. Their high end stuff is spectacular, like the Valhalla up to Odin 2 are striking, but the lower end are pretty unremarkable.
As far as silver vs other. The character of the sound of inexpensive intereconnects is often very material driven... but high end ones are not... all the components have been carefully chosen and any deficiency in the metal are offset by other materials, geometries and other factors.

