Hey Testpilot thanks for the 90% example. Takes all the subjective out of the equation. Here is one example of black and white which the debate is over. Now will the poster get it ???
"Straight" talk
I can't emphasize enough about the importance of proper azimuth. When even a bit off, the result is smearing of soundstage, emphasis of one channel or the other, blurring of lyrics, loss or air around the instruments...etc. If Paul Simon (et al) doesn't sing in his own space exactly between your speakers....better get a Foz.