Flexible "upmarket" power cords I have used include: Tekline Reference and Micro Reference, TelWire, Lessloss, Shunyata Python and Anaconda.
None is universally better than another, but each offers good performance in a cord that is easily maneuvered in one's system.
None is universally better than another, but each offers good performance in a cord that is easily maneuvered in one's system.

