Power cords? suggestions?

[fdm]

To summarize what we've learned:

(1) Snake oil is always the first thing out of the keyboards of people who have systems for which such things wouldn't make a difference anyway.

(2) Try out the one(s) you're interested in in your system, if you don't hear any difference, return them for a refund. Repeat as necessary until you've made up your mind one way or the other.