Don't take this the wrong way Paul, but personally I don't give much credibility to anecdotal evidence most especially where it apparently contradicts fact. Subjective evidence is useful, not to be dismissed out of hand, but really very unreliable.

I've tried asking various cable vendors why their cables are better than what I'm using at the moment (2.5mm copper loudspeaker cable and shielded coax interconnect). A pertinent question I think.

The answer I get is always the same. Either an attempt to convince me with bogus science or what I call the try it and see mantra. The try it and see mantra has been used as a dupe for a long time to sell all types of product - relying exclusively on human psychology to be effective. And very successful it is too (even made an appearance on a recent edition of The Real Hustle).

When I get an answer that isn't either of these then I'll certainly try!