Having this much torque & horsepower makes it almost too easy to drive. Unbelievable acceleration --- from standing start or passing at speed --- just punch it and hold on. Traded a 2003 SL500 to get AMG engine, 5 passenger seating and a really nice trunk. I preferred the SL500 suspension and quicker steering but the E55 engine & transmission make this a preferable choice. This is a stealthy car. Not too many realize what a beast it is. It lives up to the advertising. Not one problem to report at 12,000+ miles. There was one recall for brakes and one fix for suspension --- car pulled to the right. An article in Star magazine pointed out this problem which was fixed under warranty.
Love all that horsepower & torque. It gets really good gas mileage --- 18-19 in town, 22-23 highway... provided you control your right foot. Seats are very comfortable.
The 'Comfort' setting for suspension needs to be softer. 'Sport 1 & 2' settings are really good. Do away with that analog clock & put a gauge or gauges in that space. A larger tach would be nice, too. The Conti Sport Contact 2 tires got really noisy at 6,000 miles.