Personally, even if I conceded Coffeescript is worse in some scenarios [1], I still evaluate Coffeescript as far preferable to Javascript overall. There's multiple dimensions to consider. (Disclaimer: I've only compared the two on the backend, so far.)
[1] Like representing datastructures. Or that subclass-without-constructor subtlety (https://github.com/jashkenas/coffee-script/issues/2956).