Here's a nice piece I picked up a coupla years ago.
Tell you one thing I learned about cable. Cables sound different in different environments, or rather, the weaknesses in poorly shielded cables are amplified in direct proportion to the noise in the environment. I have a pair of Nordost Blue Heaven cables which work really well upstairs, but for some reason they pick up all kinds of noise downstairs. The absolute best is ptfe shielded twisted cable. They naturally reject RF and are relatively simple to build. All my interconnects and speaker cable are built this way.