Sound quality and price wise, B&W or Dali home theater speakers?

I am tired of the my B&W DM303 (left/right) and LCR60 S3 (center) speakers. I am planning to bring them in to the dealer I purchased them from to trade them in for a replacement for my left center and right speakers. The dealer has a pretty good deal on used Dali speakers that look brand new and come with warranty but I wanted to know if sound quality wise are Dali speakers that range from the 500 to 2000 dollar mark better sound wise then B&W speakers in that same price range