Of the two I would prefer to be a great singer. To be able to emotionally move other folks just by singing has to be one of the greatest gifts one can receive. And no instruments required, other than the human voice. I know dancers can show emotion in their movement but I have yet to see a dancer that actually moved me to tears. On the other hand, I have become watery eyed on many occasions when listening to a really great song. Sometimes it will be the words that move me. Sometimes, it is the manner of the singing, which is why music and song transcend national/language boundaries.
WrAnTz 