One thing to think about ACC doesn't necessarily work well with a manual transmission...Get them. For highway driving the Advances Safety Group makes a big difference in comfort.
ACC is fantastic, especially in slightly congested highway traffic with an auto trans. It will bring you from 75 to a dead stop and back to 75 while you just sit there and watch. It's really comfortable.
I find the side vehicle detection really useful for a reason I didn't expect. When some bonehead camps in your blind spot they will see the yellow light on your side view mirror. It often makes them move on their own, thinking it's some kind of turn signal. You usually don't have to adjust your speed or change lanes to get them out of there.