I have a Samsung Series 6 LCD HDTV, Comcast HDTV cable box, PS3 and just purchased a Bose CineMate Series II. My TV and cable box provide an optical digital audio output to attach to the Boise receiver. It's hard to describe (I think it's mainly a difference in tone), but I've noticed a difference in sound to when it's plugged into my cable box versus my TV. Which one is suppose to be "better" for connecting my Bose receiver? I have read some things on 2 channel audio versus 5.1 but don't understand how it translates to my scenario. Thanks in advance.