So now I'm finally sailing a F16
I have never seen a Falcon, so cannot comment on the finish, but White Formula have a reputation for building top class catamarans.
The Shadow is much more stable downwind with the larger spinnaker. I am much happier having it up in the stronger winds that the small one. There is less pitching and the bows are really lifted, because there is also a spinnaker pole (not on the original Shadow) to get the sail out in front of the cat.