cd45123,
The rectangular copper and silver are superb, I have the Neotech rectangular copper wire called the Sahara and it absolutely is better than my Harmonic technology pro 9 SE using round OCC, and I also have the Sahara interconnect which bettered my HT magic ll XLR interconnects, and just so you know the rectangular wire that zenwave uses is made by Neotech for zenwave, neotech has two wires in their reference series, the Amazon which is the rectangular silver OCC wire and the Sahara which is their rectangular copper OCC wire.