I currently have a home cinema setup consisting of a Denon DVD-1930 player and a Denon AVR-1507 amp with Tannoy EFX 5.1 speakers. I'm looking at getting something better in the speaker department for listening to music. If i were to replace my 2 front Tannoy speakers with something like the Monitor Audio BR2's or the B+W 685's to achieve better audio, what effect would it have on the whole 5.1 cinema experience ? Would the rest of my Tannoys, ie centre, surround and sub woofer, all become lost in the bigger sound of the replacements ? I realise that i can utilise the second front connectors of my Denon amp for the additional speakers to be used when playing cd's but i'm lacking space, and would prefer to ditch my front Tannoys totally if i were to buy a better pair of speakers. Any opinions ?