I'd say BMW have the edge on the infotainment side of things but not much in it and maybe because I'm still working my way around. I did however pop in an SD card with speed cameras and they show up plus bong at you when close if you want. I obviously don't speed, this was merely an educational lesson to see if it was possible...
Suspension is firm but I still find journeys comfortable. So my BMW 335d has the adaptive suspension in that with 2 settings. In comfort it would soak up the road bumps a lot and it was very comfortable however it would body roll on corners. In sport it would firm up quite a bit, the body roll was pretty much fixed and you'd feel the road more. It was however still a softer suspension than the C63 in comfort. I've no problems with how it is, it is comfortable and I feel relaxed at my destination. The important point here is my wife finds it comfortable. *phew*
Small point but coming from a BMW you would set the temp but it also had a dial to set if you wanted hot / cold air to come out of the vents. I'd normally leave this in roughly the middle but I never quite got why they did this. I like my side to be cooler and my wife likes her side to be tropical. This works much better in the Merc as my side can be blowing cold air and her's hot with the car deciding what's needed based on the temps each side is set to. This wasn't possible on the BMW because you only had one dial. I never got say how it would heat say the car up if you had the dial in cold or vice versa.