RCA Interconnect recommendations

I'm looking for a new set of interconnects and need recommendations.  I'm running a Rega P3 (with Exact and Neo PSU) and a Sonic Frontiers SFL-1.  In between, I will be adding a Darlington MM7B, which is on order.  I was using an old pair of Cardas Ultralink 5C interconnects but find them a bit muddled.  I also have a pair of Audioquest Red River interconnects and they're very bright.  Any suggestions for something that's musical, clear and detailed, with good bass response?