OK...so I snuck in the movie "Identity" tonight on BD. I don't think I've watched it since either my 876 or my Aperions, so this isn't going to be any kind of comparison test. But I will say, WOW.
Not a lot of LFE, but the whole thing (for those that haven't seen it) takes place in a rainstorm. The thunder, and consistent rain throughout was a stellar effect. While there was minimal music, the depth and clarity of it was outstanding.
Again...if you have a comparable AVR to an 876, I don't know that it's a vast improvement. Much of what I hear could be a placebo effect. But if I were to do it all over again, I would've started with an Emo amp as part of my original plan! My Aperions sound amazing with it.
Sorry I don't really have any more specifics to share. If I get a chance to do a little more critical listening this weekend, I'll be sure and share my thoughts on it again.