I find it difficult to describe the positive changes brought about by a good power cord, it just sounds better in general - better resolution, and a "bigger" sound, if that's acceptable.
Defilamentkid, I don't blame people for being skeptical about the whole power cord thing, I was too. It seems counter-intuitive. But if they'd just listen, the difference is real. On the other hand, I get aggravated when people refuse to accept that interconnects can sound different, and that some higher-priced ones are actually worth the cost, because I have experienced these things first hand and know it to be true, and some people are so absolute in their opinions about the supposed "cable myth."