Buyer and listener psychological arguments aside, to my way of thinking everyone engaged in cable arguments are usually right, but for the wrong reasons drawing incorrect conclusions. I'm talking in generalities here, and not specifically about anyone posting in these threads. No offense meant.
The need for something more exotic than well-constructed cables (power, interconnect, speaker, whatever) with acceptable measurable attributes of resistance, capacitance, inductance, and interference rejection for the intended application is undoubtedly real and differences audible. However, what that really indicates to me is not some magical, immeasurable quality imparted by what should be a character-less piece of wire doing a simple job of transferring signal, power or both, but either a defect or design failure of the equipment to which it is connected. It's 2013 and there is no longer any excuse not to get the damn electrical engineering right so that exotic cables won't matter anymore! (except for the important social/psychological/marketing/branding aspects, which will always matter for reasons other than audibility of course)