I guess I was lucky in that my whole house was wired with 20 amp circuits. We bought the house in 2016 and it had ben built in 2008. The original owner was a computer guru and had the circuits all 20 amp.
Power Cables and Wall Sockets
Without knowing for certain, it seems to me that power cables can only be as good as the in-home wiring coming to the wall socket. Is it possible that those who use expensive cables have improved the wiring to the socket? Or is the power from most wall sockets normally excellent, but is limited by conventional power cables?