I've only compared the Harmonic Technology Truth Link's (copper) with the Pro-Silway Mk II's (I believe copper and silver). The latter are more open and have greater detail in the highs. The Truth Link's are a bit warmer and richer sounding, but, by comparison, make my system sound like it's being held back a little. For a brighter sounding system, the Truth Link's might work better. Hope this helps a little.
