If you want to throw money away for
pretty case and very expensive price tag pick either of them. Sound quality won't change, but your perception of it, will.
Some people like B&W signature sound, but I prefer to actually enjoy high quality music, not listening to speakers vague interpretation.
http://audio.com.pl/testy/stereo/zespoly-glosnikowe/2568-bowers-wilkins-803d3 :
$5k to $7k - I'd consider upgrading speakers, not electronics, as they directly affect 95% of total sound quality. Ascend Sierra with Raal tweeter, Philharmonic Audio and Salk would be my to go choices at this price point. I haven't heard mountain of speakers, but Salk SoundScape 8 there best speakers I heard at ANY price point. Including B&W Diamonds, Wilson Audio, Paradigm Reference and few others.
With Philharmonic 3 you probably not needing your pair of 10" Sealed subs with 450W amps - I am not a genie, but that recipe doesn't sound very promising for deep bass.