IMO, there's no point in discussing this. It's like religion, either you believe it or you don't, either you hear it or you don't. Science/measurements based sites like audiosciencereview and audioholics say their machines don't detect any difference in response curves and IMD, and they can't hear any difference as well (though there are some instances where expensive battery powered AQ cables have more distortion). Some people swear by it despite any lack of evidence apart from their subjectivity. Personally, I've tried kimber, chord, qed, zu, van damme, mogami, monoprice, diy pure silver, diy silver plated, and all of these whether speaker wire, digital coax, interconnect or power cable did not make any difference in my room with all the gears i've tried it. If it makes your gears sound better, then good for you.