I'm using Audioquest's best all copper speaker cable, Oak .. this is my 1st all copper speaker cable so I can't really offer recommendations.. What I can say though is I was upgrading my components to try to get the most detail in the music.. I did very well but the problem is/was that it got so detailed , it became analytical.. I didn't like it.. At that point I was using silver plated copper speaker cables (litz) .. 2 things I did from there was replace the silver plated copper cable and inserted the Audioquest.. it seemed as though became "softer" but without losing the details.. 2nd I purchased some NOS Mullard tubes for my Oppo205 modded (Modwright) and now I'm much happier with the sound..
Oppo205 (Modwright)
Classe SSP800
Classe CA2200
Paradigm Signature S2v3
love to try the new Persona bookshelf !!
hope this helps