I think that's the best thing. Also, James MacMillan.
I love some of Bernstein's concert music as well as his conducting. Some of it is really silly, but some of it is awesome. I actually got to see an orchestra perform his third symphony, and it is still one of my top five concert experiences ever. Boulez never really had the silly part, but he's a fantastic conductor. I'd actually say most modern concert music, if it's orchestral, Boulez should conduct. Well, unless it's American, because there's a different aesthetic to a lot of American contemporary music. For American music I'd go with MTT.