I don't know exactly where in HK you would find a dealer with a wide variety of Carltons, but I'm confident that in a city so big, at least a few shops will carry the odd Carlton or two, best to consult a current HK resident. As for "overcoming" your 9000X, that depends on what you mean overcome, or what aspect of the racquet/play is more suited than the 9000X.
"overcome"..... ummm tinpro, try to find the Aberdeen shop, last time I went there, they have quite a range of Carlton rackets. In the UK (where I am at the moment), they have an entirely different range of Carltons, namely the Fireblade and Aeroblades. They are very very nice China made rackets, but still quite expensive. The Asian range that you can find in HK costs a lot less, but I guess with similar quality.