This decision is also my current agony for our main TV; influences include unit placement.
In fact when I look at the best of each of them, I want a hybrid :-)
speakers of the BV7, looks of BV10, price and placement of BV8
I disagree with others about the BV8 ... I have not looked inside at the build quality, but I like the style, texture, capabilities: what I would add is a better centre speaker.
As for the existence of a BluRay player that I pestered my poor dealer to death over ... I am slowly accepting what others have always said: it is becoming marginalised by digital communications