Isnt it the Plasma screens that Buzz?
I was in soundtrack the other day, and i was checking out all of the plasma screens and man, it sounded like a damn bee-hive.
I might be "bass ackwards" on this, but i think the best way to go is LCD, because the LCD screens dont Buzz and they also hit darker levels of black, while Plasma never gets darker than a real dark grey.
The plasma's sure are slick, but when you hit a quiet part of the movie, that buzzing will sound as loud as a bug-zapper.
if you are looking for something 60 inches across, you gotta go with a LCD, cause i dont think philips has finished its 60 lcd panel factory.
Either way, next time you are checking these out, listen for the buzz.