zlone,
if you have the money the NEOTech rectangular OCC is even better than the round if you go on the NeoTech site just look up rectangular cable they have two the Amazon which is the silver rectangular OCC which is crazy expensive and the Sahara which is the copper rectangular OCC wire I upgraded my whole loom to the rectangular OCC and what a difference, but if you really want to hear the biggest difference put your speakers on Townshend podiums they stop the vibration from going back into the speaker and the improvement was mind-blowing Best upgrade I've ever done.