Speaker Cable Upgrade... Advice Please

My current cables are Cardas Cross.  My speakers are Wilson Sophia 2.  I just changed electronics from Audio Research tubes, PS Audio DAC, and Whest Phonostage to the Devialet Expert 220 Pro.  The sound is a bit more bright and forward than with the previous gear.  I am happy overall, but I would like to tame it a little.  I am considering an upgrade to the next price category in speaker cables.  $2-3k retail new for a 2.5 meter pair.  Any suggestions for a cable that will work well with my gear?  Any thoughts on Nordost in that price range?  Perhaps Heimdall 2?

The brands that have peaked my interest are Purist, Verastarr, Nordost, and Cardas.

thanks!
Mark