Howzit Vinesh,
Your car looks wicked...I'm also from SA
I've got a Koni setup(Koni Sport Springs and Sport Shocks) on my Polo GTI
I had the H&R springs on, but found it bumpy - I'm now happy with the Koni springs but need to get the rear end lower - will be getting customized springs for the rear.
Where about in SA are you based?