Joe, so did you end up getting the E55?

I picked mine up 3 weeks ago to be used as a daily driver. Excellent car for that purpose.

Lots of power, rattle free body, nice stereo and as you mentioned, very smooth throttle tip in - so smooth that my wife (after test driving for 5 minutes) actually thinks the car is not that fast. Obviously she did not dare to give it more than 10% gas.

The fun part about the car is that you can accelerate and pass most cars on the road (at least where I drive) without even going over 3,000 rpm.

Very civilized car.