I do not get to drive my E420 very much as my wife won't let go of it. I do get to either perform or have performed all of the service (today it gets new front brakes). It has 91,000 miles on it now. Can I get some feedback on shocks? It still has the originals. Should I replace them, and if yes, with what? It is driven primarily by my wife on the freeway. On the other hand, we do live in North carolina, the home of some of the nicest twisty roads in the country. Anybody got thoughts, recommendations, actual experience? It does not have the sport package and I'm currently riding on Continentals, which I like.