The first and last speaker to fool me I was listening to a live performance was a tri-amped pair of Tannoy 215 DMT II that were being used as the main playback (not mixing) monitors in a recording studio. No other system, in any room, has come close. Of course, the studio had probably spent as much on acoustic treatment of the room as on the speakers (which used to retail for $9K/pr.).
JT
JT