Everybody and his brother knows there is only one fool proof method for obtaining the absolute best speaker locations. Any speaker, any room. All other methods, calculations, trial and error, lasers, what have you, can only find local maximums.
Here's a little something they may grab someone's attention.

When you listen to music in your present setup, do you have a sweet spot of about 1 or 2 persons wide, and does the music move with you when you move out of the sweet spot? This is pretty much a yes or no question.

With Master Set, the sweet spot is eliminated, and you can sit anywhere with the same sound, and better sound than before when you had the sweet spot.