Directional interconnect cables

It is a pointless and circular discussion. Trust you ears and don't listen to any pseudo-scientific explanations of cable theory. In a hobby that is immersed in hype, hyperbole and BS, cable, is without a doubt, the most extreme of all. If you like a $10,000 cable that is all that matters. If you like a $10 cable the same applies.
No one can, using the scientific method, prove that burn-in
is audible.

Narrod - Thats exactly what I'm saying - trust your ears. Some people are absolutely certain that wire cannot have directional properties at any level tossing left and right equation from high school books while everything is in reality much more complicated (what I was trying to show)

So I trust my ears and when I'm not certain I follow manufacturers recommendation (I don't see reason why not to).

trust cable companies - they certainly know more and have more experience.

I am sure you can trust many of them, however, I would be cautious about their vested interest in selling higher margin products. And a $400 audio or video cable is likely a much higher margin product than say the latest competitively priced big ticket item such as a plasma HDTV or a speaker. Let's not be totally naive about the fact that these companies actually sell these things for a profit. There are probably very few who sell cables as a service to humanity because they "know more and have more experience".

I'll have double Grey Goose with three olives.