i'm using nordost blue heaven. nordost is what gershman uses at all the trade shows. blue heaven is the best i can currently afford.
i know there is a multitude of cables to choose from but i went with paul speltz's anti-cables and was totally blown away after hearing them on my system. at $10.00 stereo pair terminated and shipped is a audiophile's dream. best cables i have heard and would not even consider any other. currently using them on 2 systems. have recommended them to others with everyone purchasing them as well. very natural sounding with lots of detail.