The navigation / telematics graphics are second to none. The hard-drive based navigation is the quickest thing around and the graphics could have come from my laptop.
The first six months of ownership have have ZERO problems - not even a rattle to be repaired. My previous BMW was in the shop all the time and sometimes I just gave up on getting thing to work properly (like the bluetooth).
I feel like some of the old-school Benz philosophy has returned with this car, the new S, and the new CL. The company went through a pretty dark period with quality of materials, etc. It appears that the company is getting back to its roots.