The $20,000pr Bowers&Wilkins 800D speakers are simply amazing!! My jaw drops when I hear them! They are the best that I have ever heard. If I had the money to spend on 800D's, I would! However, the M80's are in my price range realistically.
If you have a B&W dealer near you, its worth your time to have a listen!
I have yet to hear the M80's, but I am sure they would be absolutely fine for most of us!