777-300ER X 2 (9W)&(SIA), A330-300 X 2 (QANTAS), A350-900 X 1 (SIA), A380-800 X 2 (SIA) seated at various positions. I must say that the A380-800 is a class apart! take a bow Airbus! I had always been partial to the Boeing, but the A380 had taken my heart away. I was seated at the lower deck the 1st time I boarded an A380. Honestly, I had no clue when the aircraft was at rotate speed and through out my 6 hours in it, I could virtually feel no sound at all. Note that I was at the front aft of the economy section. I could enjoy a great view of the Changi airport while the A380 banked almost 360 during a summer sunset. I surprisingly found no difference between the noise levels of the 777-300ER & the A350-900 (shocked) I was rather hoping to find the same db levels on the A350-900 as the A380-800 since conceptually it was a newer aircraft but was bitterly disappointed.