Back when my ears were "young". The best I heard was a generic "Orange" TrueValue Hardware 12g extension cord with the ends lopped off and terminated into spade connectors with McIntosh tube amps and/or Technics SA-1000 into Inifinty RS-IIs. Granted, back then it was all Lamp-Cord or Bell-Wire anyways.
In my 50's now, and although I can still hear up to 15K, I doubt changing cables these days are worth the time/effort/cost. LOL. I stick to BlueJeans and Mogami these days and am totally happy.