I have a 2013 300S (245/45R20 99V) and will soon be ready for tire replacement. My car came with Firestones, which are quite noisy on the highway. I'd like to find a very quiet yet durable tire with a nice highway ride since I commute mostly. I have heard good things about the Continental Extreme Contact DWS and the Michelin Primacy MXM4. Does anyone have experience with these tires? Are there others I should consider? Thanks for your help!