Race, I don't know much about the NAD, but a cursory look at the website shows me that it's pretty similar to the 3808. Many of us here have the 3808, me included, and think it's one of the best out there right now.
It doesn't look like the NAD decodes any of the new sound formats, which is okay, because most Blu-ray players do that themselves (I think).
Either receiver will power your M80s just fine. Looks like one user review for the T775 likes the manual. Sadly, the Denon can't compete there. You're better off using the forum here rather than the manual to figure things out.
