If you are looking at this, i think you know what you are looking for.  This is the most feature rich verion of the Impera push button controllers.  It will actually drive a Neets/Biamp Apprimo Touch Screen.  Its the only of these models that will do this.  Otherwise, you will need a tango, or Apprimo 8i which are much more expensive.  A great way to get a good set of control methods, and add a screen later.