That's kind of nuts!
My AVR supports 7.1 and I've tried it a couple of times when my room layout allowed it. I honestly didn't feel that it added a lot to the movie experience. That was using a pair of m22's as main surrounds and a pair of Energy Take 5's as rear surrounds.
Back in the 5.1 setup, the upgrade to QS8's over the M22's for surrounds made a *much* greater difference in the realism and envelopment of surround effects.
I have read posts on other forums by folks who swear by side-axis channels. I think Emotiva's MMC-1 could do that.
