I've had a Panamera 4S (v2 pre-facelift) for 2 weeks and a 4-hybrid (v2 facelift) for a couple of days as a loaner to my 4S CT, and I agree on a couple of points, but not on some others ;)
Agree on the fact that the Panamera is the more serious car. It looks and feels bigger, it's put together...