I wish I could remember which movie I saw a few years ago that had one of those 2nd disc special features segments about the music in the sound track, it had none other than John Williams as the conductor, and during the mixing they showed a bank of three Nautilus speakers across the front. Rather impressive indeed. After that I'd noticed a number of other "special features" discs showing the mixing process using banks of three monitors (rather than floor standers) in somewhat smaller mixing rooms. Almost looks like std. operating procedures-maybe.

So Yup, three of a kind, tall'uns or short'uns are used by the Moviemakers, so why not us?!

I've been using three M3s across the front with great success myself, sounds seamless. I'd reccomend it too.