I preferred the Cerious Graphene Extreme over Synergistic Black. SR Black was in the same price range as the SR Foundation cable that you are considering. Cerious GE has a fuller bodied sound and passes along detail at least as well as the SR Black cable does. Maybe the Foundation cables are better, I haven't heard them. The Cerious Graphene Matrix is in a whole different league and is what I now use throughout my system.