I had B&Ws for a long time. First the N804 and then the N802. While I had the 802s I bought a pair of used, old Thiel 2 2s to try them out. I really liked them so a couple of years later I replaced the N802s with Thiel 3.7s. In my opinion the Thiel 3.7s are superior to the N802s in almost every way. The B&Ws will play louder and have more bass but the Thiels have more defined, better bass, clearer midrange, better off axis response leading to less room sensitivity, better midrange intelligibility and a smoother tweeter. It's not that the B&Ws are bad, just that the Thiels are better in every area I care about.
I was surprised by this since B&W is a much larger company with a far larger research budget and all that. I decided that I think B&W, like a lot of producers of high end products, is more concerned with marketing talking points than they are with performance. It's fun to talk about all of the characteristics of B&W speakers. The big black head, the Kevlar midrange, there are a ton of things to talk about. This reveals, in my opinion, how performance can take a back seat to talk and aesthetics in high end audio. Whenever a company's marketing material starts talking about a lot of fancy manufacturing techniques and exotic materials I tend to lose interest.