Having arrived back in Adelaide this morning, on our 21st trip between UK - London etc, travelling on a Singapore A380 from London to Singapore, I would say that the flight was excellent. We enjoyed the entertainment system, finding that the larger screen was first rate, and the sound even better. The second leg from Singapore to Adelaide was on a Boeing 777/200 and seemed very cramped and outdated.
We were travelling upstairs in the economy section, and found the noise levels were a vast improvement on our earlier flights on a range of different aircraft, but would say that that the overhead lockers were quite small, presumably because of the shape of the fuselage, and it was quite a task to fit all of the bags in.
We flew on the A380 from Heathrow to Singapore and i have to say it was the best flight i have ever made.
We had 4 kids in tow and they never moaned about being bored.
Went to see it at Adelaide it was awesome deadly silent on take off you wouldnt know it had taken off, as for the size it is alot bigger than other planes not so much the lenght but the height and width.
Here is one of the best pics i took.