I'm super happy with my 150 for both 5.1 music and dialog during movies. Nothing but clarity for me and it seems to blend seamlessly for music. I too run it 2 or 3 db higher just to even out the dialog on some weaker DVDs. I should probably mention I have M60s not M80s but for this discussion, I think it's still a relevant comparison.

I hope you solve your problem but if not, no shame in trying something new. Happiness is what counts in the end.

With great power comes Awesome irresponsibility.