A friend of mine who works for a telecom company gave me some really nice flexible double-shielded coax cable. He said he made his interconnects with it. I did the same and they turned out great. No noise. I used the inner shield for the neg and the outer shield as the drain. After making one pair he could not get any more of it as they swapped to a stiffer brand of cable. I found a quite nice substitute online, very cheap, and used a nice cover to dress them up a bit. There is no need to spend silly money on these things.