X5 sound system HK vs BO

I loved my wife's x5 so much that I purchased last November, I needed to get one of my own. So I am finalizing the build this week. I would like objective opinions on the B&O sound system. I put the HK in her car and it's a very good sound. I just can't wrap my head on how much more costly it is over the HK and is it worth it and in particular why is it worth it?

Thanks for your opinions.