And what about for budget receivers and speakers, for example, I have this amp: https://www.cnet.com/products/sony-str-dh820/specs/ and B&W 684 speakers. What would the optimal cable be for that pairing, and, in your opinion, would it be worth it?
As for bi-wiring, I'm going to test my current cable in a bi wire set up. If that offers an improvement over single wire with a solid silver jumper cable then I'll compare that against the 0 awg when it arrives. If that sounds better again, I might even bi wire the 0 awg. If it works, great. If it doesn't I can use it in another system.