I know it's not OCaml, but you should really give Scala a try. Martin Odersky has never been shy about his love for SML and OCaml, and it really shines through

I know it's not OCaml, but you should really give Scala a try. Martin Odersky has never been shy about his love for SML and OCaml, and it really shines through in the semantics found in Scala.