Signal Cable Silver Res. vs. Cardas Golden Ref IC?

Has anyone heard the Signal Cable Silver Resolution vs. the Cardas Golden Reference (or Neutral Reference) Interconnects in the same system? If so, what did you think? I have the Silver Resolution and am considering changing over to the Golden Reference. I love what my Hexlink Golden 5-C speaker wire did for my system. Obviously, even at Audiogon prices, 2 pair of interconnects is around $700, so it won't be a cheap investment. Rest of system is Tyler Acoustics Linbrook Signature System, McCormack DNA-125 rev. Gold, and a Herron preamp. Thanks in advance!