Forgive this newbie questions. I've had a DVD-A Marantz player and a Yamaha AV (630?) for some time wired to my stereo speakers. I had digital and 2 channel analog connections. I now have a lovely bunch of KEFs. Everything seems to work well through the digital connection. I've connected the 6 channel up as well but now I've done it I can't see any reason to use it over the digital. Is there any benefit with DVD-V or DVD-A or for that matter anything else? Finally, I have also cabled my video to the AV can I now get surround/pro logic on TV & Video?