FWIW, Rupert Neve, the designer of probably the most universally respected mixing boards in recording in the last 40 years, and still going strong, is on record as saying, when questioned about the wire he used in his famous old consoles, that he used to nip down to the local dump and see what he could scrounge there. This revelation was preceded by chuckles, since the "sound of wire" was a fairly new consideration at the time of the interview (around 1990, I think). The subject was as contentious and emotional then as it is now.
Most good Engineers I know (and the capital E is significant) still snort at the idea that anything matters beyond capacitance, resistance, inductance and shielding and go slightly ballistic at the notion of directionality.
This includes Bob Speiden, who makes one, if not *the* finest ribbon microphone in the world.
I try always to keep an open mind, but I must say my synapses start synapping when I try to wrap my head around the notion of a $600 power cord in line with loomex (house wiring).
Shocking, ain't it.