Help Please....Interconnects...Silver vs. Copper?


I am now running a Plinius 9100 to B&W Nautilus 804s with Tara speaker cable.
My source is an Esoteric DV-50.
I ran Tara RSC Air 2 XLR from the Esoteric to my BAT VK-31.
I have downgraded to a Plinius 9100, and I need RCAs.
Any advise...PLEASE...
I want to maximize my potential here within the $200 range.
I have been looking at the Black Dragon, Morrow Audio, and DH Labs BL1 & Revelation.
I am not sure what silver will do to my sound?!?!
I have heard silver and copper sound different.
Any help would be appreciated.
Thank you.
jl2
I loved my 804N's ... used them with a Musical Fidelity A-20 and then Classé 101 and 151's ... so much build quality and sound that only got bigger and more profound without ever breaking down into jibberish ... those and the 803s were simply great speakers that were questioned far too much