Hello. In an effort to improve the sound of the x81 I would like to replace the stock speakers (they look to be 6") I know the power output is only 14w/channel but ya gotta believe that a better set of speakers would be worth the effort. Does anyone know of a good replacement for these? We've got a great DD5.1 system but use that mostly for DVD -dont want to burn it up watching network stuff!! Any advice/suggestions will be appreciated!