Sir,
B&W Speakers
It's really a best matchup...... and would really sound sweet... Pero para hindi O.T. tayo
Yamaha is categorized as one of the bright recievers (matinis ba sa High frequency..
) so if you will pair it with a speaker using soft dome tweeters(wharfs, and the like), it would tame its brightness. B&W on the other , uses metal dome tweeters, medyo matinis but others may call it neutral in totality and Denon is mabilog ang tunog sa lower end frequency so just the same it compensate the highs . Just my 2 cents..
Bottom line, all recievers (yammy,marantz,Onkyo,Denon, Harman) will perform well with properly matched speakers........