I agree with both Mark and Ford
Ray3 has the VP100 and is completely satisfied. Of course, Ray has adopted my old adage that "'easily amused' is a virtue". I believe that Neverhappy did comparisons and found virtually no difference between the two.
The one point I would underscore is the dispersion; some VP150 converts assert that the sweet-spot is a bit wider with the VP150. Other than that, I've not seen or heard any compelling evidence that, for a room your size, you have any technical reason to upgrade. Emotion is entirely another matter.
