This subject has been pounded to death since the inception of this site
and the conclusion of the matter after all things considered is to make
up your own mind but beware of the choice you make. The are lots
of results if you search the site but here's one that might help.
http://www.xoutpost.com/bmw-sav-foru...-lifetime.html

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"What you hear in a great jazz band is the sound of democracy. “The jazz band works best when participation is shaped by intelligent communication.”
Harmony happens whenever different parts get to form a whole by means of congruity, concord, symetry, consistency, conformity, correspondence, agreement, accord, unity, consonance…….