None is really better than the other.
I have Gold and my Fiance has Silver, and the only difference we have noted is the frequency of different Pokemon and some types not found in one or the other. So, Game play is the same. However, the intro scene for Silver does look a little cooler because the scene is at night, and the Silver Theme Pokemon looks cooler. In the end, I would recommend talking to your friends and buying the one that they don't have. Please take care, once a message is removed it cannot be returned.