Hi All,
I have used wireworld cables on my system and they are great cables that usually deliver value well above their price point.
One small example of this is their XLR interconnect, manny brand will charge you 500Eur on a XLR cable and then it comes with plugs that cost less than 5 Eur. Wireworld gives you a bespoke one that even has silver on it.
Independently of the brand you chose, metalurgically speaking copper sounds different than silver+copper and from silver.
Usually with copper only conductors you get a warmer sound, and with silver base ones you get a more opened and faster sound.
Although I have the Eclipse 8 on my system I think the Silver Eclipse 8 are better because they are copper and silver based conductor. But in the end, it really depends on what you want todo with your system.
Hope it helps
Fil