6.1 is richer.
Granted 5.1 gives you the stereo effect, cept 6.1 gives it to you more dramaticly.
Reason I say this is because I\'ve been to the demo of it @ Chel\'s Audio. Fun thing with 6.1 is you can even work it beta!
Now I know some people will probably flame me for saying it works with Beta, but Beta is better than VHS recording. All news stations use, and I\'ve seen some pretty killer rips of movies on Beta. Then again, its not DVD quality at all, plus, your sound system has to be on par with your players quality.
So 6.1 is better because it gives you more options.