Thanks guys! We've been looking for a new car that is worth $45K more than our low mileage 300E. I think we've found it.
My wife had a 190D for 18 years and we only sold it because we retired and went to one car. I would have no problem convincing her that the new MB diesel is the car for us.
I suspect these new diesels are not going to be as bulletproof as the old ones but they sure will be more fun to drive.
BTW, what oil does Mercedes recommend in England? Over here in the US, the gasoline cars get 0W-40 Mobil 1 with 15W-50 as an alternative. I live in Arizona and use 15W-50 in my 300E.