Just setup a 7.1 system. I have an Oppo 971 player that has 5.1 analog audio out. Which would be better to use for DVD (movie and mostly TV shows) watching? 5.1 analog or using the Optical TOSLink cable? Will my DVD player only output through 5 speakers (plus the sub) if i use the 5.1 analogs? I'm just curious as to what the benefits of the analog connections are as compared to the optical. Thanks!