Quick question on 72 T- Konis

Possibly buying a 72T, and looking to replace the shocks all around. I was thinking Koni Sports but I know there are the Koni Classics. Is there a large difference in performance, stiffness vs softer ride, tightness in handling?
What about Bilstein HDs vs. the Koni Sports?
Your help is much appreciated...thank you all, kind and wise gentle people of this board.

I just bought a pair of front Koni shock inserts for 72-73 Koni struts. I was told that on the hardest setting they are equal to the softest setting of the sport insert.