For a "brick and mortar" brand speaker, I think B&W sound great. Its just the price that kills.
Example, their 800 diamonds cost 25,000 msrp. Imagine the speaker set up and gear you could get with that. For example, maybe Klipsch's THX Ultra II setup with 11 speakers + 4 Funkywaves 18.3 subs. That would still be cheaper and look what you get. It may not be top of the line, but with room treatments etc... It would sound close.