Just as with everything else in this hobby, you will find no consensus answer to this question. There are many variables, such as system synergy and personal tastes.
That said, personally I have found them to generally work in this priority:
1) Power cords
2) Interconnects
3) Speaker cables
Obviously, YMMV.
That said, personally I have found them to generally work in this priority:
1) Power cords
2) Interconnects
3) Speaker cables
Obviously, YMMV.