where as the ls430 does have some weak points i'm pleased to tell you that it is definitely a notch better in terms of gear change/effortless ride.
in the mark 4 you do notice the revs and gears change especially when cold - in the 430 you don't - even when cold you dont hear the engine note or gear changes. - the throttle is more sensitive so the car feels very light - you also don't hear the steering retract - all done silently.