Depends... Is the girl beautiful? We can't answer your question, you should answer it yourself. If you think she's worth the try then do it.
Are you one of those guys who are in the situation where they are good friends with a girl and are worried about taking it to next level and being intimate with her because it might destroy your friendship? Only you can truly answer your own question.
Both are good and you really can't compare them. However, if you have to make an option from the same person, than it completely depends on what you value more.