The best I have tried till today is East Ocean. During weekends, the waitress will carried the tim sum around asking you if you would like to try. They have different kind of special of the day dim sum which you wouldn't find it at other places.
The other which is also nice is Crystal Jade Restaurant in Takashimaya, not the small small one in the basement. I agree that tim sum from Crystal Jade Kitchen is not as nice as from the restaurant itself.
To see is not enough, you got to go and try it to believe it.
Tried yum cha before, not that fantastic if you have tried East Ocean before...
