Well, it goes without saying that being a Dudeist is unquestionably the best but we're talking about things attainable by the common person.I've never been a Christian but I can't imagine why even being a good one would be better than being atheist. Unless you want to run for public office in the United States, I suppose.
Better by far, I suspect, to be a Pastafarian.
Or at least a Dudeist.