I had B&W CM6 S2, paired with a Rotel, so the "proper" pairing, as recommended by local high end shop. Once I got the Pearlacoustics Sibelius, the B&W did not sound particular treble forward, but rather had bloated smeary mids.
I think B&W is pushed to many new people. Might be because shops make a good profit off them? At any rate, I think they are overpriced and underperform. So I traded in my CM6 towards a Pass XA25. Very happy with that combo.