It depends quite a bit on how thin you want the neck, and how rigid. Some people have said they like to feel the vibration in the neck, and you just don't with carbon fiber rods. That can possibly be a plus side, so it's really just personal taste. The Hard maple neck should be stable enough for a normal sized (maybe even a thin) neck, although it won't be quite as stable as carbon fiber reinforced necks (duh ).
Devon