I have Bowers and Wilkins fronts (683 and HTM61).
I've been looking into surrounds, but I don't really like their offerings for surrounds, and they cost too much in my opinion too.
I have a long narrow room (10.5' x 25') I've been thinking of getting QS4s for the sides, and M2s for the back. They have titanium tweeters and aluminum woofers. The B&W have aluminum woofers and aluminum tweeters. Sounds like they might match well enough for fronts/surrounds. But I really am only guessing.
Anyone have comments or advice or have heard them together?