It is very easy to demonstrate and prove the difference a power cord can make. Cables wind up being just about as important as any other component. Nevertheless a lot of people have a mental mind block. Until you are able to get over this the smartest thing to do is buy stuff like danager mentioned that is already made for less than you could make it.
DIY PCs
I am thinking about upgrading my system power cables. First off, I should confess that I am an objectivist and a cable skeptic. That said, I see nothing wrong with a little bling in the cable department. I don't think any of the present PCs are stock, they are lab grade molded connector types suitable for lab test equipment. I will need four PCs: Pass INT-150, Oppo UDP-205, and 2 x ML Montis. I will most likely go DIY and would like to spend around $50 each. Any suggestions? Thanks in advance for your replies.