Another factor to consider is the space between the speakers. In general, the farther apart the are, the more toe in may be needed. Hard to imagine, for instance, that speakers 12 feet apart sound their best with no toe in. Each of us has their own preference for sound. Some may prefer to be totally in the speakers direct sound field, others prefer the sound of their room's reflections. All good ideas here to experiment with.
Speakers positionning
I just try a new toe-in for my speakers, and it worth the move. Instead of crossing the focus behind my head ( at position seat), now it cross in front of me at 2 feet. The highs are well defined and present with well blend music
and no more edgy treble at "forté" passage... But it depends of your room and speakers... You can read more about here:
http://forums.stevehoffman.tv/threads/speaker-positioning-toe-in.321814/
http://forums.stevehoffman.tv/threads/speaker-positioning-toe-in.321814/