Looking at getting a 6.1 speaker set as I am considering buying a new surround sound system to replace my cheap setup at home. Looking at getting the Yamaha RXV557 amp and getting a 6.1 speaker set to go in my bedroom. All the sets of speakers I have seen are 5.1, would it be better to plump for one of these sets and add another speaker? Or try and find a 6.1 set? Or get it all seperate? Really dont want to spend more than £400-450 on the whole setup including amp, as its only a bedroom so doesnt need lots of power. Was also thinking of the Yamaha AV57 system which is the Yamaha RXV357 AMP and NSP110 speakers as thats £160 for the lot, which I think would be fine. I would like 6.1 though and the Yamaha RXV557 has more optical inputs to put DVD player, XBox 360, PS3 etc connected all at once. Plus I think the extra speaker will give better sound. Can anyone suggest a 6.1 speaker set or whether its best to get seperate speakers?