Dokosan,
I can only speak for my own experiences. After 30 some odd years in this hobby, I have played with and paid for more power cords than I like to admit. At the end, I just couldn't convince myself and my friends that they make much if any audible difference. I am now using only stocked cable throughout my system.
Maybe my system is not sensitive to power cord. Or maybe my 50 year old ears can't hear the difference anymore. So there is nothing wrong if you want to try something different. Just make sure you don't have to pay for them before trying out.
