Demetrios: What is (are) your source(s)? I understand you want to upgrade your speakers so my advice, lets say opinion, might not be exactly what you are looking for. But if you are looking for substantial sonic upgrade, I would suggest you upgrade your source (before the amp or the good speakers you already have). The source is often overlook by many people and I suspect that could be your weakest link instead of the vp150. But then I am more an audiophile (stereo) than a home theater person (5.1).