Greetings All; OK I'm new to this hobby and this site but I take it that using old extension cords that have seen better days is not really the way to go for speaker wires. I've seen some very expensive wiring at my new favorite place to go and drool (Magnolia HiFi in Portland, OR) and I'm stunned. Does it really make a difference to sound quality? I think the fellow who's been eagerly helping assemble a system is a pretty straight shooter and he's telling me it really does. Comments??