Hi mate just call them say your unhappy and gonna leave if they don't do anything with the price. Tbf they generally do bring the price down just trying there luck
The bose system in my Porsche cayenne was ok. The bang Olufsen in the q7 is good nothing special.
I second that the maserati granturismo is pitiful standard sound system. the maserati gotta be close 318i 1998 bmw we had in terms of how bad it was.