I see what you mean. I think best for me to buy Auricaps and place them strategically and listen for a difference. I might put them in one side and not the other and have someone move them so I don't know which is which. Do a blind test on myself and listen for a while to discover if I can hear a difference. I could ask other people to listen too. I can keep score of who noticed and which one they liked best. Then I can look and see which one had the Auricaps. If I do this, I'll be sure to report back here.