I recently bought a refurb'd Harman Kardon AVR-525. I've got it connected with 7.1 speakers. The manual is very vague when talking about the different surround modes though. I know what DTS and DD is when it comes to DVD's, so no problem there. But when listening to music or analog audio/video programs (like VCR tapes or cable TV), the surround modes are kinda confusing. All my analog programming defaults to Logic 7, Harman Kardon's own surround sound that reproduces 7.1 channel sound from RCA inputs. Available in both Music and Cinema modes. Then there's DTS-NEO 6 which sounds louder than the rest, also available in Music and Cinema modes. Then there's good ole Dolby Pro Logic II which doesn't use 7.1 speakers, it only outputs sound to 5.1. Also available in Music and Cinema modes as well as "Emulation" which makes it act like original Pro Logic 4 channel (who would want that anyway?) What are the pros and cons of each of these and which one is best to use for music and movies? I've tried flipping between all of them, but I'm having trouble figuring out which is the "best", so I was hoping for some expert analysis of these surround sound modes since their description is vague in the manual. Thanks!