Do I have to read 30 pages? 😍
I have a simple view, I look for really big changes. Rabski did the best job of explaining these points earlier... Audio memory is terrible, measurement is never good enough, DBTs test conditions have to be so perfect you certainly can’t achieve it in an average house, where even the time of day will impact mains voltage.
My findings... like politics this is where you may find your own internal bias will kicking in...
I have couple of thousands of pounds worth of mains cables and can’t hear a difference with any of them. I have equally expensive interconnects and speaker cables where I can head big differences. I don’t know why and I don’t worry about that. I keep the mains cables in as they are like a comfort blanket. My friends who have no vested interest were very surprised at the difference cables make and weren’t expecting it. Hope this is of some use!