Hong Kong International Airport has been named best airport for airports serving over 40 Million passengers a year.
I travel regular via this airport and it is high on my list of favorite airports to travel from. Check in facilities are fast good. You can also use the check in facilities in the city, making things much easier.
There is a good number of shops on the airport, and a good variation of restaurants if you need to refuel. It got even better with free wifi covering the whole airport.
Walking around is easy, navigation is good, and the airport is clean. Since I can use my electronic HKIDCARD, immigration is a matter of seconds. Both when leaving and returning to the territory.
Anyway, will be interesting to see how Bangkok airport will do in the rankings next year......