IMO, the difference is the Logic7 DSP compared with the DIRAC DSP in the Individual Audio.
Logic7 sounds better in the car to me than the DIRAC, regardless of number and quality of speakers and OEM amp power output.
-2015 F30 320i, Imperial/Oyster, 8AT: August 2014 ED
-2012 E92 M3 Jerez Black/Rust Brown, M-DCT: Gone
-2008 E90 M3 Melbourne Red/Bamboo, 6MT: Gone
-2007 MK5 GTI United Grey/Grey, DSG: Gone
-2004 E46 M3 Carbon Black/Cinnamon, 6MT: Gone