Are there any differences between the various models of set top box used by NTL? I've heard that newer ones are much faster and offer far more interactive options, and also have an optical link for digital sound!!! Is this true or was someone winding me up? I know I've seen digital terrestrial stb's that say they offer optical connections and 5.1 surround sound, but does digital TV broadcast 5.1 signals? There does seem to be far better cable boxes available than the old thing I use, but I don't know if NTL use them, can you request NTL give you a new one? Would it give you access to new/faster services? Will the optical link work? I've noticed quite a lot of the NTL adverts show a blue control that has a completely different layout to mine, is that a newer box? What are the advantages of a newer box, is it like getting a new terrestrial stb because I know the difference in quality and content of those can vary hugely. Can you buy a better box that would work with the NTL cable, like you can buy Sky boxes?