Kacz - I wouldn't know what to expect from the 6's unfortunately because have never sat down with a pair. My guess is they would be behind both, but I have zero evidence to support that assumption.
Unsound - the 5's did a phenomenal job on the low end and mids. They were also extraordinary in demonstrating separation between instruments on either channel. However the pure and clean center focused soundstage on the 7.2's was something that the 5's was unable to duplicate for my ears. I found this particularly evident on higher end recordings. There were some tracks that I could even say that the 5's might come out ahead, but in the end the 7.2's would hold and balance the vocals dead center and floating. I guess that is what does it for me!
Unsound - the 5's did a phenomenal job on the low end and mids. They were also extraordinary in demonstrating separation between instruments on either channel. However the pure and clean center focused soundstage on the 7.2's was something that the 5's was unable to duplicate for my ears. I found this particularly evident on higher end recordings. There were some tracks that I could even say that the 5's might come out ahead, but in the end the 7.2's would hold and balance the vocals dead center and floating. I guess that is what does it for me!