I wish I had bought one with a manual transmission! (And space for a spare and a dipstick).
Of the choices offered I am very happy with my Sdrive. It is fun to drive enthusiastically and it is fun to drive and go for max mileage. It's fun to drive. I've had cars with more torque and horsepower but the Sdrive will get up and go quite nicely, particularly when the turbo kicks in seriously at higher RPM.
Added some hood sound insulation from a 128 (another part that should have come with the car) and wish I had a temperature gage (preferably water, otherwise oil). While the Sdrive is the first automatic transmission I have owned, and I'm old, it is a kick to drive and one can select gears with the throttle fairly easily.