I have to say Max Sports inside Splendid China Tower just across from Market Village.
Max Sports carries mostly sports equipment for table tennis, badimonton and tennis, which are all really popular sport activities for Asian population.
Trust me, it is not easy to get to really get that seletions of Butterfly table tennis racquets in the other western stores.(I did not realize that Max carries Butterfly so I ended up order one from the US that took forever to arrive!) And they have a great selections of badimonton racquets too!
They also has the online stores where you can check out the prices and what they carries! But definitely go in the store and try them out before you buy...