All I can say is the Bose system in our CX-5, since it has been broken in, is great. I originally thought it was subpar to the B&O in my A4, but now I'm not so sure. Turned the bass and treble up a bit. Especially love the sound from the tweeters, and I'm surprised to say that about Bose. (No highs, no lows, must be Bose.) I also find Centerpoint sounds better. Less bass, but more definition. To each his own.
If I want to listen to DVD-Audio, my A4 still has it and it sounds incredible, but I will be the first to admit it is going away and we just need to adapt to that. I never listen to CDs anymore.