Im so glad you say this.
Most of the people naturally assume that a 7 series is a tank, and handles like a big frikken boat.
What people do not realize, and this is so sad, is that it is BMW's flagship for a reason.
That chassis is so frikken superior in its design and composite, that it will, outhandle any equiv 3 series, which probably the exception of the //M3.
I will outmaneuver, out-drive, and simply outclass any driver with an E65/F01 compared to his E90, on the road, on the track....
Combine that handling, with the fact that you will never have a living room as fancy as that car, and you will understand why its BMW's flagship...
Dammit I miss my 7 now..