i had an experience w/ pwr cords- the after-market cord was a little brighter sounding/harsher than the stock cord; BUT, it did reveal a little more information. i think if a cable/cord doesn't give the listener the impression that it "rings", especially in the upper mids/low treble, it's a good choice. if your speakers or acoustics emphasize these frequencies, your cable choices are going to narrow. but then, your main fix lies elsewhere anyway.
How do you know if a cable is neutral?
I hear this all the time, this or that cable is neutral, or less neutral or more neutral. What are the criteria for "neutral"? How do know when a cable is neutral? Interested in opinions and examples. No bluebook required though.