4 pot calipers- worth fitting?

[Plank]

I took a friend for a spin in my more mature mini recently.
He was very concerned about the fact that the car could keep up with modern stuff on B roads but probably wouldnt stop as quick as the car in front with ABS. I had never thought of that!
Is there a big avantage fitting alloy 4 pot calipers over the standard S calipers? Also whats the difference between the Mini Spares and Mini Sport offerings?

[Plank]

Thanks for the advice chaps. I have some thinking to do. The car is a 67 so I fully intend to keep 10" wheels and S discs. Steve.