Late response. (What happened to my first??) Firstly, I dismissed the laminated glass option as heavy, expensive and unnecessary, as did sales advisor. Then I read a piece in Autocar (19/01/22) by Jesse Crosse explaining the heat and sound insulating properties of laminated glass, plus its comparative lightness (2kg for a Panamera) and resistance to break-ins. Last week my 330d Touring had its rearmost side window smashed by felons in a secure underground carpark in central London and £350 of gifts was stolen. The cost of the replacement glass was eclipsed by the labour involved, not least in removing interior trim to extract multiple fragments from the large demisting vent on the sill. A thousand pound lesson. So, I advise, 1) specify laminated glass if offered the option, and 2) use your load cover!
With regard to Burmester, nothing sounds like a Burmester unless you have lived with a Burmester!
Andrew
2022 Macan GTS
2016 Boxster S
(2019 330d)