This is an awesome car. I traded my 2007 GL 450 on this car in January 2009. We live in Chicago and this car is far better for city driving. This car is head and shoulders above everything else in the class and, in my opinion, many larger SUVs. Very maneuverable, great seating position and views all around. Acceleration is solid, but the chassis is amazing. As the Edmunds reviewers noted, this car is as solid as a brick. It inspires lots of confidence in all driving situations. Surprisingly good in the snow, even with the 20" wheels. The C- Class Nav/Audio system is much better than the older system in my GL. HK Sound is superb and the rear seat DVD system is much improved.
Driving position, firm seats, good Nav/Sound, firm chassis and confident handling. Fuel economy not as good as advertised, maybe still breaking in.
Keyless go - Once you're used to not handling a key, there is no going back. More front storage spaces. Better iPhone 3g synching - address book doesn't synch and won't charge.