@jeffreyw : Of course, you are entitled to have your own opinion. I'm just reporting what I'm hearing. I also think my opinion makes more sense than your opinion - not that all the audio findings (mine and others') make a lot of logical sense. In this case, still, if you believe the power cord makes a difference then why wouldn't "more" (=longer) power cord make more of a difference? It's like saying that adding salt to your food makes it saltier, but the quantity of salt doesn't matter at all.
I've recently read an older article by Louis Motek, the founder of Lessloss, claiming that length does matter in power cords. On the other hand, he told me in an email talking about his C-marc power cords that the sound impact of 1m should be minimal, so there's that.