Deciding between this and the 911 4S was a tough decision, but they are comparing apples and oranges. The fact that you can get this type of performance in a four door "sedan" is unbelievable. Anyone who has been around BMWs before knows of their intense performance, but lack of "luxury" - this car really has it all. The available optins are fantastic (the comfort access is a must!). Bottom line, this car is truly a spectacular machine. Not only does it outperform just about everything on the road, its style is set apart enough from the standard 5 series that you catch a lot of looks in it.
Comfort access, M button, iDrive system is great - far less clutter of buttons all over the dash.
Clearly the gas mileage, but the navigation on this car is horrible. I also have a 2006 Range Rover - night and day. BMW needs to up their focus on luxury amenities a bit more without compromising performance.