After reading the glowing reports of the performance of the plus package I am thinking of modifying my order to include it. I've already ordered the Performance model with grey 21" rims. What is holding me back is concerns of a harsher ride with the plus package. Have anybody driven the regular Model S with 21" rims and the P85+ on the same surface and done some comparisons? Or driven the P85+ on bad roads? Impressions? Anobody done comparison between the P85+ and other cars with a comfortable ride (like the Audi A7 with air suspension)?