Mak- Power cords are like spouses. One person's dream is another's nightmare. (Was that sufficiently politically correct?) Anyway, you are going to have to try a few (several days auditioning) to understand the effects of each within the context of your system and sonic preference. There are many good to great pcs available, and many have trial periods available. Most companies will be able to accommodate your need of a 20A IEC connector. The best I've had in my system has been the FIM Gold. Others will certainly have their favorites as well. Good luck.