If one were to take the airport express train from HKG to the city, it is necssary to take a taxi to reach the hotel, unless one is staying at 4 seasons.
The good thing about Changi is that it will cost approx. HKG 100 to take a cab direct to a hotel in the city.
Is T3 Kris lounge better or CX HKG lounge better ? in terms of deco luxury , my opinion is Kris lounge. The only con about Kris lounge is its distance to the gates.
Noodle bar and nice bar counter are what that give the Cabin/Pier its appeal. Shower facilities at both are equally nice. However CX lounge can be very crowded at times.
One airport lounge which i think is comparable is ANA at Narita.
As stated in my above post, interms of custom clearence and security clearence, T3 is more efficient.
Both are AAA aiports, which i think very few outside asia airports can match. Zurich airport is another AAA airport.