I used the Pro Silway 3 for some time, and finally concluded it sounded a little strange and disjointed, with a slightly bright top end. The best way I can describe it is that the music just didnt seem to integrate top to bottom. Thats in my set up, and I am sure it can be excellent elswhere. I settled on Nordost Heimdall for now, which seems to fill out the missing density in the midrange, and make the highs more natural. Removed a little brightness but kept the sparkle. I know this isnt what you would expect from Nordost, but the Heimdall appears to be warmer than what I would have expected from Nordost.
If you have serious brightness, I would look at the components, not the cables.
If you have serious brightness, I would look at the components, not the cables.