I own PMB IB2's and LB1's and drive them with Bryston amps. Before I bought the PMC, I did listen to many different B&W's. IMHO, the PMC is a far better speaker. In particular the PMC's excel at low end extention, imaging (they dissappear) and dynamic range. I found the B&W more veiled and constrained.
PMC speakers partner really well with Bryston amps.
PMC speakers partner really well with Bryston amps.