very good list, I as well would personally pick the 'Speed6, always loved that car except for its clutch, but that can be fixed. Other than that, of that list I would pick the Audi, but my pick would be a 07 with the V8 - just for the sound it makes.
My other rather eccentric picks, personally, would be:
07 Volvo S60R
08+ Saab 9-3 TurboX / Aero XWD
94 Alfa Romeo 155 Q4
05 Subaru Legacy GT
07+ Audi S6
03 Audi RS6