I had a bugaboo I brought with me from London, and I got rid of it not long after arriving in hk. It is just too big and heavy and was a pain to fold and lift it with a newborn and a toddler.
I finally got one of the Japanese ones here by Aprica, it's suitable from birth and weights only 3.6kg! You can't compare it with the Bugaboo, but it's very light, has a very quick single handed fold, stands when folded so I don't have to bend over. Yes, it's does look flimsy and makes quite a bit of rattling noise, the basket is also very small, but with all the folding and unfolding, I never put much in it anyway. Mine is still going strong after a year, both of my children go in it and my big boy is almost 19kg! I really can't ask for more!
With the HK climate, I mostly use it in shopping centres or just short walks, as there is always a train station nearby. Buggies have to be folded to board buses and taxis are cheap and everywhere.