I have twins and I had several strollers, all bought in the US since we lived there, but I don't think there is a perfect twin stroller and definitely not a suitable one for Hong Kong. I use my MacLaren most, also for the car and travelling, seats recline well so it's easy to use for smaller kids.
Please note that MOMS in HK organizes Pregnant Mommy lunches and many activities for (future) twin mommies. I am a committee member, so please pm me if you want more information. It's great to have other new twin mommies to talk to!
http://moms-hongkong.com/