Thanks all for your feedback.....one thing I have done is when I go to Hi End Shows like the CES in Las Vegas, I make note of major mfgs like ARC, Magnepan, Krell, Conrad Johnson etc. to note what power cords they use....after all, they are showcasing their products to the media , their immediate retail customers etc....they seem to use their supplied products...nothing else.
But when it came to interconnects, there was no definitive favorite other than ARC claimed they used their own.
Speaker cables, with biamped Maggie 20.1s were noted to use Valhalla one day and MIT the next....hmmmm.