Now in a more serious vein, -from the popcorn gallery- to paraphrase Newbee: I like what he had to say about this topic. I also think air is either in the recording or it is not. I don't like phase to be screwed around with, because that could give you lots of unnatural "air". A transparent system, with good handling of transients, which by the way took ages for me to build up, will give me an idea of the "aura" around instruments, which I will hear in a live concert in spades and try to implement at home with varying success. In actual fact, it is so difficult to achieve, that many experts here, who've never been to a live event, wouldn't even know what I was talking about. But if you begin to get that right, most of the rest, what our happy crew here thinks important, generally falls into place as well: stable images, pin-point placement of voices and instruments, depth and width of soundfield, not fatiguing rendering of music, PRAT and proper timbre.