Expo and DR really need to be used in combination. They work in different ways. DR limits the amount to total movement of the surface whereas Expos soften the centre point and make the airplane less reactive.

If it the Reactor or similar 3D airplane you are talking about and you are a decent pilot, you may not need expo. I have expos only on the Phoenix Extra 60, that to only to reduce any snapping tendencies. Expos usually hinder 3D flying

Ameyam