PMC speakers vs B&W... has anyone compared?

I'm coming to realize the next step up the sonic food chain might be more capable speakers then my CDM 9NT's. The Natilus range (804/802) might be the ticket... I've always used B&W's, but have an itch for something different too. Looking at the numbers of the PMC FB1+, seems to tell me their range is amazing - much broader then the 9nt's. I know specs don't tell the whole story so I thought I'd see if anyone with any first hand comparision of these brands might shed some light. What would be considered a better speaker in PMC's line the the smaller Natilus floorstanders?
Jazz and rock on vinyl is what I listen to mostly.
Thanks