the most expencive cables i have ever saw were from MIT.
http://www.mitcables.com/ One ove the stero shops I used to go to when i lived in ohio carries it. One cool stereo shop too I may add, they do multi million dollar installs, and are still cool toward everyone that walks in the door.....
Oh and btw I use Monster cable and love it, though I have $90 worth of cableing in my car for just one pair of RCA's and one run of #8.... But my whole home theater is wired with monstercable...