I have had a W215 CL and the difference is day and night between the Karma. The steering feel is much more direct and the car handles much better than the CL. I am not sure about the new CL but I cannot imagine it handles better than the Karma (weight distribution). Quality wise the Karma blows away the CL (both previous and current generation). The quality of the Karma is that of a handmade coachbuilt vehicle and is the best of any production vehicle. I absolutely love the materials and quality of the interior (comparable to Rolls-Royce and Bentley).
I just sold my 2010 S class for my Fisker. I also had a 2007 7 series. The S class is quieter and smoother, but the Fisker interior is far more luxurious, the Fisker handles and brakes better, and is far more enjoyable to drive. The Fisker is much more beautiful and gathers more attention. The drawbacks are that it is harder to get in and out of, has a tighter interior, a larger turning radius, a much smaller trunk, and doesn't have auto trunk closure, and its controls are more difficult to use (radio, A/C). The Mercedes stereo is a little better sounding.
