I think most of this stuff is a race to brag about who spent more on their audio systems because nobody can even hear the difference.
That's pretty much it Mike,
Are these folks going to ask the PoCo to install a transformer with gold plated terminals?, when you consider that most HV connections use Aluminium as the conductor in any underground installation, it's all done to a price.
The fact that these clowns think that you can HEAR the difference between different types of cables, is laughable,
everyone in a distributed system, gets the same electrical supply of the same quality, with modern systems of supply, there will be noise, RFI and other stuff on your power lines and if Broad-band over Power lines(BPL) ever takes off, there is more interference over your lines.
Personally, I would like to hear a convincing argument FOR the use of larger conductors, when you consider Skin Effect, you are just wasting copper.
BTW, unless I've missed something for the last 20 years, neutral/ earth bars are made of brass, not copper.
