If I were going to recommend an upgrade to the Grand Master system it would be to go to the VP150 in center as the first upgrade. As for doing this by moving to the QS4 as the effects it is certainly a reasonable trade off from an overall performance point of view in a small to medium sized room. For medium to larger environments I think I would stick with the QS8s and the VP100 to get the most from the system overall at that price. If you can go the extra $130.00 I would highly recommend the VP150 and QS8s for all environments, perhaps we could refer to it as The Grandiose Master System.

Ian Colquhoun
President & Chief Engineer