I have not tried a $500 ethernet cable but the very affordable Supra sounded better than the one that came with my BS Vault. Why does the last 6ft or so of a power cable make a difference when there’s 100ft or so of romex from the panel to the wall receptacle, plus miles of cable floating in the air between a substation and your home? Well, it does make a difference with power cords and I believe the cable is canceling out noise, EM/RFI and that same principle is probably true with an ethernet cable. Not sure it makes sense wiring ones entire home with say Supra, but the last meter will make a difference. I come off the wall port to a switch then with a Supra to my streamer.
