Firstly, sorry if this is the wrong place for such a question, but basically is it worth me buying an extra speaker to update to 6.1 from 5.1 as i have recently upgraded to 6.1 amplifier? It would be another Kef 1005 series satallite speaker (approx £70). Would it be worth me spending that money bearing in mind i would probably also have to buy a stand for it (£30). Any advice would be greatfully received. Regards, Realslimcookie.