Have you listened to the Revel Ultima Salon2 Alan? I think the M80's and the Salon2 would be the ultimate of blind listening tests. They seem to have similar design goals.
I was watching the Iron Man 2 extra features and the recording for the music soundtrack was done at Abbey Road Studio. I noticed they use B&W speakers as reference. The one room had multiple speakers I think in some sort of MTM design placed horizontally across a wall (on-wall). Do you know the purpose for that? Seems like a rather strange arrangement.
