A few years ago, I have daily driven a 745 BMW (not my car)

http://www.pbase.com/cta2/ambs_car

My personal comments are: its a great car, but not relaxing to drive... coz its too "alert", like having 3 cups of coffee when driving it.

The BMW is too much of a drivers car that it gets tiring

I have also driven a Lexus LS recently and its very comfy... I would choose the LS over the BMW as a Daily Drive... yes, there are people who use these cars daily.

But of course badge for some is important...

Havent driven the new S class so I cant compare the MB

just my 2 cents