It is interesting how different perceptions can be. I have heard the Sophia 2 and the Watt Puppy 7 on several occasions, the last driven by EAR tube gear. I also have heard the 802D driven by McIntosh SS monos. Different rooms, different gear, and different sounds. To me, I was quite surprised at how boomy the bass on the Sophia 2 was playing Holly Cole. The dealer blamed the recording. I blamed the space and the gear (with a different amp this was mostly but not fully cured). The room was quite small and the wall boundaries were too near also. Not a good way to sell Sophias. On the Puppy 7 or on the B&W 802D, there was no boom. This Sophia experience, from a Wilson dealer, was enough to put me off them even though I suspect they would work much better in my room. I'll never know. I found the Puppy 7's to be much better and would really prefer those over any new Sophia --but again, the rooms were not identical. All this is to say that you just have to hear for yourself, and ideally in your space. Speakers sound different to different people with different gear and different spaces. For the record, I thought the 802D was closer sounding to the Eggleston Andra 2 which is a great speaker, and offered better music to my ears than the Sophia, and perhaps even the Watt Puppy 7 (though the latter were certainly impressive too but the Wilson sound is a little hard on my ears, that's all I can say, it's a personal thing). I think B&W don't have the same image or cache as the Wilsons (company too big, sold at chainstores etc) but I believe the economy of scale they operate under with their huge market means they offer great value for money (think who's paying for all those wilson adverts and the lexus-level of service). I think the reviews of the 802D generally in the audio press called it right, it's a really good speaker, superb on classical and acoustic. It was not boomy on rock for me (I actuallly found it bright), but it sure does have real bass that will require placement to be addressed. And I am not a bass fan! As others have noted, your own gear is pretty good and you should never underestimate the potential of tweaks, set-up and positioning. A system has many variables at work and the room is primary.
Best of luck
Best of luck