I use to think rca's were rca's and speaker wire was speaker wire until I actually compared premium cables to budget cables....there's definetly an audible difference to the trained ear. 60% of the consumers out there can't tell the difference between some Pyle subs and some IDMax's though anyways. Power wire on the other hand depends nothing more than on strand count for conductivity and oxygen free insulation for durability. I personally would never shell out the extra money for top of the line wiring though because it's just not worth it to me unless I was competing.