I don't play CD's that only sound good through our system. I play CD's that allow the listener to hear what is special about our system.
An easy example. We had with us the Torus Infrasonic Generator from Wilson benesch. Some people wanted us to demo it. I feel we might as well put on something that has tight, clean, fast, deep bass. Why throw on a CD that is muddy, slow and pushes out 40hz in the extreme.
Another example. If if you came to my Porsche dealership and wanted to take a test drive I would be inclined to give you a spin around a track with curves and straights where you could get a feel for what it can do.
Not a bad thing.