Recommendation for an audiophile speaker cord that is not "bright"?

A friend has loaned me the Nordost Valhalla I and II as well as Nordost Frey 2 cables. They are wonderful speaker cables but do emphasize the "brightness" of my system including my Wilson audio Sahsa 2 speakers.

Any suggestions? Would used Transparent cables provide a richer bottom end? What about Audience Reference?

Any recommendations would be greatly appreciated. - Thank you - Gerry
If you don't mind being anti-audiophile, I've tried the very reasonable speaker cables sold by Blue Jeans Cable and found them pretty uncolored. Technically (in terms of resistance, inductance, and capacitance), the Belden wire they use for them is among the very best.
Since the others are much more expensive, I am going to try the Acoustic Zen first. Thanks!

Audience AU24SX. Don't do anything wrong; clear, natural and balanced. Can't go wrong, and reasonably priced.
I would seriously consider Tomic601’s recommendation.
I owned a set of Transparent cables, and found them rather dull-sound wise, and they cost a small fortune. One that was not recouped when selling them.