I think the car's wings are a touch high on these models which still looks fine, doesn't bother me at all.both. i am trying out some adjustments currently for the sauber and benetton, and I am doing all my testing at suzuka ^^
The car riding on the ground or the base plate disappearing into the track under braking or high downforce situations takes a lot away from the the car.
Try the Williams at -0.0365 or -0.0370 instead of the -.0440 suggested, this gives the car a good natural look from all angles.