I'm set to confirm my order for a 70D with 19" wheels and am concerned about the noise level in the MS. I've owned BMW 7 and Lexus LS models for many years. I listen to satellite radio, and for reception purposes only, am forced to get the pano roof. Otherwise, I don't care to have a sunroof. How much noise does the pano roof add to the car on the highway (especially on coarser roads)? I've driven a MS with 21" wheels and pano roof and felt it was definitely too noisy for me. The MS with 19" wheels and standard roof is quiet enough. The dealer has no demo with 19"/pano roof combo for me to assess. I would appreciate any input from members; especially those who have the newer revised pano roof in their car. Thanks.