I did not order + as I find, that the price for this is simply too high. I can only imagine 1-2 times per year, that I will drive a distance, that is just between the two, making it necessary for me to perform an extra charge without the + option. I imagine chargers will become better and...
I had exactly the same considerations, with the addition, that I need to be able to mount roof racks on the car sometimes. Apparently this is not possible with aluminium roof.