I have a Yamaha YSP 1100 sound bar connected to SKY HD via optical cable, the sound is very good (altohugh no real surround effects). I want to upgrade to something which will be noticeably better. My room is 22ft by 12ft and I am prepared to cable but dont want big rear speakers or preferably front. I would be prepared to spend around £800 possibly a little bit more, could I beat the overall sound of the Yamamha for that?