I also spend a lot of money on power cords, because it feels weird not having them on my expensive equipment. But I'm not sure I can really tell a difference. It is interesting to me that three different designers whose equipment I hold in very high regard think the whole concept is suspect, at least with their equipment. In fact on one of these pieces I had to have "custom" work done to remove the captive cord. This skepticism does not seem to apply to ICs and Speaker Cables with their various and obvious filtering effects.
