We flew
QF 747 400 back from Oz in 2001, we had the middle section bulkhead seats, great legroom and the ptv u could move to any angle.
Any way, we had a couple and there baby next to us, and u know how long the flight is, it did not scream once the entire flight.
They are good seats, andif u have ur earphones in and the volum up, whatdoes it matter
(just watch when u leave ur seat, my seatbelt nearly hit the baby on the head at one point, and i got a evil look of the mother)