My wife currently has a 2007 v6 convertible. Time to think of a newer car and thinking of another mustang, from 2012-2014 model. She loves being about to ride with top down, but the car is so noisy on the highway, she cannot enjoy the stereo. We haven't driven a newer convertible but I'm wondering if the model we're looking at is quieter than the 07 model. The price makes the 2015 a no-can-do, even though I understand they made some improvements. Thanks for replies.