Coolfrank, all 2011 and newer 5 series are F10s.
I agree with you. I used to have a 2009 GS460 with Mark Levinson and I found the mid range clarity and the lows to be much better despite fewer watts.
2013 ///M5 Individual
Frozen Grey, Silverstone Full Merino, Piano Black, Exec Pkg, Drivers assistance pkg, LED Package, Bang and Olufsen, 20" Forged wheels