Tvad's advice is excellent. Try one, if YOU can't hear A difference move it to another component and see if you can hear A difference. If after moving it to all your components you will have determined which components may be affected by a change in A power cord and will be able to focus on the specific cord you want to use on it. Not all (if any by some folks opinion) components will reveal a difference in PC's, nor all ears. If you can't hear a difference think of all the money you will save! :-)
Are upgraded power cables really worth the money?
My system consists of musical fidelity a5 integraded and cd player, b&w 703 and a rel 305 sub. I'm Im using purist audio musaeus interconects and speaker cables. I understand and can certainly see how these cables have helped my system, but am a bit aprehensive about investing in upgraded mains cables. Do they really make much difference? With the system I have what would be the right amount to spend on them. Any suggestions?