The other thing to keep in mind when auditioning cables is to do a double-blind test. That means that not only should you not know which cable is currently in use during the test, but the other person who is responsible for switching them shouldn't know either - label them cable A and cable B so that the person doing the switching only knows them by those names and no other. If you switch the cables yourself it is really easy to trick yourself into hearing differences, and if a second person does the switching but is aware of what cable is what, they can easily impart subtle, almost sub-conscious, clues to you which you *will* pick up on, that's just the way people are wired, and will bias your opinion no matter how objective you think you are.