There's a website for dark chocolate for those who eschew the Path of Sweetness and Light; who believe that dark chocolate is the True Way to Salvation. You'll find a lot of history and detailed information on dark chocolates you've never heard of, I guarantee. Start by looking at their index of chocolate to see how much there is to live for.
(And, if you've never tried them, the Very Best Chocolates in the World are made by Lily O'Brien, a choclatier in Ireland. My next-door neighbors in Seattle introduced me to them. It may be the fragrant Irish butter, it may be the blend, but Lily O'Brien chocolates are better than any you've ever had before. You can buy them in the US. Try them out and let me know.