I'd rather be goth, and the stuff about emos cutting their wrists is just a stereotype- not all emos cut their wrists, most are just really emotional and the ones that do are just finding an outlet for their emotions. (I know, the outlet thing sounds kinda weird I don't get it either.) Oh yeah... I'd rather be goth, I've tried both before.
Goth (which I am)... I think it radiates coolness haha.
But seriously... 'emo' for me is all about being passive, and being negative about everything that happens. Something bad occurs and instead of doing something about it, you just sit and cry - to exaggerate it a bit. Goth on the other hand... sure, we love black. But it's about having fun. Enjoy the things you do. Something I miss with being emo.