The owners are not very fancy of Ibiza club scene, but it is indeed best of its class in the World. You had probably got a lot of insider information where to go. nevertheless we'd like to recommend The Lio in Puerto Deportivo Marina. It is really difficult to get a table, but if you get one (or two) you will have a superb surprise.
It is a dinner plus a cabaret show, absolutely exclusive. Later in the evening the place becomes a smart Disco with nice music. Expensive, but worth it!
More info: lioibiza.com