I'm with Dmichael. I have not owned either, but I've auditioned a couple of models of Dynaudio and a handful of B&Ws and I would say that as a group B&Ws sound more zippy, which may or may not be to one's liking.
Personally, I've never really been a fan of B&W products.
Personally, I've never really been a fan of B&W products.