You know - some claim its pointless, some claim its a big factor.
I for one, Think anything that meets a decent line of specifications (for interconnects) is perfect. QED Audio 2 cables, thats where I stop. Lifetime warranty, good quality, not expensive.
As for speaker cables - lamp wire or anything that can carry a lot of current and isn't corroded or going past a massive source of noise.
Or Coax cable - little more difficult to work with, but if the entire television industry runs off it, then why the hell not.
Ah, the answer I was looking for. Thank you.