Yes, I also had heard great things about the Alpha-Core MI2, but there is some concern about impedance of the cable being a problem for certain amps. I don't know if this would likely be any problem for a standard receiver.
D_edwards,
This is for an extra A/V system in the back room of the house. I am using it for some stereo music listening, and it currently has some old Monster speaker cables with what appear to be hundreds of strands, which I believe to be "smearing" the sound.
As to the Nak receiver, first, I am not in a position to replace it, and, second, it previously was used in the front system with the Legacy Signature IIs, connected with Tara Labs RSC speaker cables, and sounded quite nice. That is my rational for thinking I can improve my sound significantly with some better cables.