Best soundsystem to listen to dubstep and drum'n'b on?

First off you need a budget for the system you want. I would recommend you stay with name brands like: JBL, Infinity, Definitive Technology, Focal, Energy, and Klipsch just to mention a few. A subwoofer would also enhance the b. A good receiver would also help, look for brands like Pioneer, Pioneer Elite, Denon, Onkyo and Yamaha. Hope this will help you out.