You don't need the pillowball tops. You can't adjust camber or caster from the top hat on a double wishbone suspension EK9 anyway. That kind of adjustment is for macphearson strut cars like the DC5. The stiffer spherical bearing top hats do have slight stiffness advantages for those dedicated to the track with their EK9, but for most it really is unnecessary, it adds to ride harshness.
DC5/EP3 owners (those with macphearson strut's up front) benefit much more with spherical bearing upper mounts. Since alignment can be affected from movement in the top hat during cornering, a stiffer "pillowball" top hat is beneficial.
To adjust front camber on an EK9 you have to get a camber kit, which is a replacement upper control arm that has an adjustable ball joint. Some, like SPC, let you adjust caster as well.