I've got post-facelift E65 with S677 Logic7 system and i'm thinking about upgrade to F01 with S677 pre-facelift 2009-2012 or F12 2011-2013, i've seen both of these cars got the same option as mine old '05 e65 "S677"
I know my e65 got 420W amplifier because there is a PDF cruising around the web from BMW, but i can't find PDF for pre-facelift F01-F12 cars.
So this is what i discovered:
2002-2008:
E60/E63/E65/E90/E92 etc etc got S677 Top "HIFI" with 420 W(little less with cabrio versions sans, less speakers )
2012-2016
BMW F01/F02 - "S688" Post-facelift 600W Harman Kardon
BMW F10 - "S688" Post facelift 600W Harman Kardon
BMW F12 - I still see S677 even after lift(like 2014 model cars, still says S677 no HK on speakers)
And there is my mystery part:
2008-2012
F01/F02 - S677 Pre-facelift - Same as E65? Better than e65? How many watts what speakers?
F10 - S677 Pre-facelift - Same as E60? better than e60? How many watts what speakers?
F12(2011-) - S677 Pre-facelift - Same as E63? How many watts what speakers?

I'm looking to get a better audio within new car, not the same one, so please help me guys, i know there is B&O option but this option is in 4,4 L gasolines mostly and i prefer 3.0 biturbo engines and it's really hard to find it here.
if anyone got a pdf or some knowledge