Here’s what I mean by "quirky:"
https://www.stereophile.com/content/bowers-amp-wilkins-804-diamond-loudspeaker-measurementsNow keep in mind, I don’t care what speakers you actually buy, but if you want to know what makes B&W stand out, this is a great example.
Take a look at the frequency response in figure 4. The peak at 100 Hz and rolloff below is quite common, helps fit many rooms, but the dip at around 2.5 to 2.7 kHz. Accentuates imaging, but also reduces the overall smoothness of the response. Next, take a look at the peak at 10 kHz. Accentuates detail at the cost of neutrality.
Now, these may be the best speakers in the world for you, I don’t care. I am just going to use this FR to answer the OP’s question.
Now lets compare to another British speaker, the Monitor Audio Platinum:
https://www.stereophile.com/content/monitor-audio-platinum-pl300-ii-loudspeaker-measurementsAbove the bass peak, this is a much smoother, and objectively more neutral speaker. It’s not perfect, there’s a strange dip around 15 kHz, but overall the response between the bass to treble is much more tightly controlled.
And yes, while I have a very strong preference for Monitor Audio, that doesn’t mean you should. Buy whichever you like, but don’t call them both neutral speakers. :)
Also, over time B&W has revised their curves, so it is another reason to call them quirky. They’ve often experimented with the market and the voicing. Nothing wrong with that, again, but they get too much credit in my mind for being neutral reference speakers, when that really varied over time. Of course, there are other features such as dispersion, distortion, stored energy and compression which is not discussed here.
Having typed all of this, I make no statement about whether or not B&W is priced correctly. That’s for the market, credit should be given them their drivers and the quality of crossover components they have moved to.