Try a pair of NBS Monitor II bi-wire cables. Very clean, open and detailed with bass definition and control. These cables use to be ultra expensive, but have been coming back down to earth and are now a steal compared to the competition. Good price for a great cable.
Read Robert Hartley's review from the NBS website for the Montior III - http://www.nbscables.com/reviews/opus.html and remember than when he did the review these cables we fetching 3 times the current price and the Monitor II is a step above the Monitor III.
Jason