A few years ago when Air France introduced the A380 they operated a number of flights to London and myself and some friends booked a flight to get a ride on one. I had flown on one before so knew what to expect but for my friends it was their first time. As we took off one friend said to me "is that it" refering to the noise or rather lack of and it is that that sums up why passengers like it so much. The A350 comes very close though.