2007 BMW 6 Series 650i 2dr Convertible (4.8L 8cyl 6M)
I purchased a 2007 650i convertible one week ago and here are my initial comments. The iDrive was easier to learn then I expected and, though working, the radio is certainly more complicated then having a couple of buttons, still the iDrive gives you access to many sophisticated features. That said, my wife, who owns a 2002 BMW 535, will not replace that car with another BMW if it has an iDrive which is too complex for her to operate.
The performance of the car is superb and the car handles beautifully even though it is not a light-weight. The fit and finish is tops.
My complaints are minor: poor cup holders, no place to put a cell phone or other small objects and it is difficult to find a comfortable driving position for my right arm due to a poorly designed arm rest.