I recently purchased a pair of Signature 800's. I've also heard the WATT-Puppy 6. I listen almost solely to classical music. There isn't a doubt in my mind that the B&W's sound closer to real music than the Wilsons. They are simply off the screen--the finest speaker for the home I have ever heard, period. It is critical, however, that everything upstream of the speakers be of the highest quality, because these speakers are ruthlessly revealing (I drive them with a Levinson 380S preamp and 33H amplifiers). Also, be sure that you have a high power, high-current amplifier, as the impedance curve of these speakers drops down to 3 ohms. If you want to save some $$, buy the Nautilus 800 instead of the Signature 800--same speaker without the fancy finish, $4,000 less at retail.
Note also that the WATT/Puppy 6 has just been superseded by the WATT/Puppy 7. I haven't heard this speaker, so I can't comment on it.
Note also that the WATT/Puppy 6 has just been superseded by the WATT/Puppy 7. I haven't heard this speaker, so I can't comment on it.