i have a 20-39cs with the new driver powered by a marantz ma500. the amp does 180w @ 4ohms. i am really impress with the bass with this setup already, but am still looking for more (aren't we all). i am thinking of getting a samson 700. will the extra wattage make a difference for me? i might want to get a second cs but want to avoid that option for now if the amp upgrade will be a noticeable improvement. thanks for looking.