Jamesw20 is probably right that you most likely would not get the most musically from either pair of speakers with an A/V receiver.
I've heard the Focal profile 918 with a $2500 Krell integrated at a local Tweeter store + the sound was fantastic, very open, lifelike, detailed, transparent and dynamic with a huge sound stage. For a while, I was seriously considering picking up a pair.
I'm almost always underwhelmed by B&Ws when I hear them. They tend to sound lifeless and stiff in the low end to me. I suspect they require very high end amplification in order to sound equally good.