I'm considering replacing some older B&W front and center speakers with Definitive Technology's ProCinema 800 speakers. I am currently not using rear or side speakers. The DT ProCinema 800 system includes four satellite speakers, a center, and a sub. You can buy the speakers separately, and it looks like buying the whole speaker system in a package doesn't save any money. I would replace my LCR speakers with LCR's plus two rear surrounds.
I'm using a Polk Audio DSW500 10" subwoofer rated at 200w continuous, 400w dynamic (whatever that means). The Definitive ProCinema 800 sub contains an 8" woofer and is 300w. Would the Definitive sub sound better than my current sub? Or would I be better off just keeping the Polk?