Power Cord Advice

Don't know your budget/system context, but here goes :
PS Audio P10 > PS Audio AC12 (I'm running this, cheap ~ excellent result).
Esoteric K03X > Esoteric Acrolink Mexcel 7N-9500 (a friend currently using w/K01X, superb synergy).
*Their safe/natural partners

If you decide to go all-out and like presentations that tip slightly on the weighty, natural/life-like, organic side of things, I'd do :
P10 > StageIII Zyklop/Kraken.
K03X > Siltech Ruby DC/Nordost Odin/ Mexcel 7N-9500 (fine tune to suit best your taste/preference).

If you are going to drop really big dollars take a look at the High Fidelity Power Cables also. http://www.highfidelitycables.com/

HiDiamond D4 will do the work. Superb power cable! We have many greatful customers.

If price is of no concern and you wish not to upgrade again for a lifetime, you should go for a High Fidelity CT-1U or UR.

68pete- give us an update! These are all great replies to your original query. IME, the very best power cord in the marketplace, is the, Stage III Concepts offered by Brian @ Aaudio Imports. Keep me posted & happy listening!