Acoustic Zen Double Barrel vs Grover Huffman

I'm looking to put the finishing touch on my system with a good set of speaker cables and interconnects. I would like to have plenty of detail, neutrality and balance. My speakers are the new Usher BE20's, amplifier is the Edge NL 12.1, with a Dehavilland Mercury II preamp. Fast, accurate and musical---if you have any other suggestions, please feel free to add those also. Thanks in advance!