Unless you want/need your cables to be tone controls, then (with few exceptions) it shouldn't matter what associated equipment you are using. In particular, I see no reason why the associated power cords makes any difference in what speaker cables to use - as Warren implies.
Check out Audioholics.com's speaker cable faceoff for a different (and some would argue more logical) approach to evaluating speaker cables.
Check out Audioholics.com's speaker cable faceoff for a different (and some would argue more logical) approach to evaluating speaker cables.