Blue Circle BC92. Blue Circle founder and designer Gilbert Yeung has Martin Logan CLS IIz in his reference system. I would think these MLs were used to design the cables. He does still use them in the system. You can always Email Gilbert and get his opinion.
I have two pairs of BC92 (I don't have MLs). They are more than well worth the money spent. See this link. The pic of his MLs are at the bottom:
http://www.soundstagelive.com/factorytours/bluecircle/