I am looking to buy a sound system for playing the PS3 in my bedroom which is 3 x 3.5 metres. I currently have some Creative 7.1 speakers which I bought for around £100.00 4 years ago – they have been fairly good but now I just fancy something new and better. My question is that for just simply a bedroom is it worth paying a lot of money for a 5.1 surround sound system that will be used at fairly low volume for most of the time - is there a notable difference in terms of sound quality to what I already have? Would stereo be more appropriate? I am willing to spend up to £600. Thanks.