Is there really a difference? I'm going to be upgrading my amp to a Rotel RMB-1075 and DVD/DVD-A player to a Rotel RDV-1060. When I do, I'll have the opportunity to get a full trade-in on my MIT AVt 3-series copper interconnects if I upgrade to the MIT AVt 1-series silver interconnects. Will it be worth it? Does the silver-copper difference really matter?