KA
If you are flying a turboprob or military pilot looking for a free unbonded A320/330 rating to improve your career prospects then KA is the place for you.
Even better if you have 5000hrs and a willingness to work very hard you will find yourself with A320 PIC time to make you more attractive elsewhere rapidly.
The current contract will not supplement your military pension to keep you happy long term but there is very few opportunities out there to progress from a metroliner/military straight to an A330 or A320 and onwards to the LHS of an A320, this is one of them
Come, take as much training (and extremely hard checking) as you can get and then move off to pastures new.
Long-term = contract unviable for HK living with a family. That is the unfortunate fact above everything else. Renting an apartment big enough for a family is a non-runner with the current rental allowance. That is a tough fact. A house therefore will never be affordable.
Your family will last 2 years maximum living in Tung Chung while you're enjoying the sights and sounds of Beijing, Ningbo and Nanjing. Before you know it you'll be commuting back home to them whenever possible and visiting PPJN on the daily.
By all means come to KA, but with your eyes open.
KA Fleet age average A330 = 16 years.
CX Fleet age average A330 = 7 years
KA Fleet age average A320/321 = 11.3 years
Orders currently pending CX = MANY
Pending aircraft currently KA= 0
The only expansion planned in KA is to fly more through the night. If you enjoy flying two long sectors at night and sleeping during the day then KA is for you.
For the long term, probably best to go to CX. At least you won't feel like a poor old cousin.