I decided on an i8 over the Tesla model S. The driving experience and the interior quality of the i8 was, IMO, superior. It was a close call mind you. I even put down a 4K deposit on the Tesla.

I felt the i8 was an £80k car with £30k of tech, whereas the Tesla was a £30k car with £80k tech.

As an unexpected bonus, my pregnant wife found it easier to get in and out the i8 compared to standard cars entries :)