OK so I picked Wasted Endeavors at random and it seems to be a good choice since it starts light and slow give you time to evaluate space in relation to the room as well as tonal characteristics.
On my system one has a more open and natural feel than the other. The depth of the soundstage is one of the clues and the other is simply the way my mind reacts when trying to get that illusion of space. I can just relax into one and the other takes a bit more focus and time. As far as tonality, listen to the attack, tone, and decay of the ride cymbal. One of the two sound more like being there the other like a recorded cymbal. The midrange is more open in one.
Since we're dealing with AKG and MBHO it's certainly not all characteristics of the box.
And as usual, isn't it nice that these are the kinds of choices we have to make.
Oh and they overdrove the PA

...And now I'm going to be really hurried to get to work since I played listening tests instead of get ready....
