More of both than we currently have!
Does the Navy truly need more of either for HSM? Honest question. I get dash speed is always welcome, but big picture, is 2.5+ and ~80-110 knots not meeting current needs (assuming the current restraints of on rotor w/ a tail rotor). I get a tilt-rotor makes a lot of that better, but as discussed, I'm not sure that's realistic, currently.
So again, not being sarcastic here, what does speed AND endurance do that a current 2.5-3.0 aircraft with a crazy good radar not do now?