i thought they were twins in the series, but then no. i don't know for sure. Some times just depends on the series. But current i would choose Sharon
if u compare sharon's performance in the last breakthrough and rain's performance in wong fei hong, i think sharon is way better. i didn't really like sharon's acting at first, but i think she did improve. i don't like rain's acting though.
i pick sharon chan
i would say sharon because her acting is improving and i'm starting to see her in more series.