ive just got a mk1 Mazda MX5 and i got to say that the handling is absolutly spot on. But the only way i can say its any better than a Mini is that it soaks up bumps better. It terms of grip and how much you can throw it into a corner, then they are about the same.
I do like the rear wheel drive on the mx5 though, switching between understeer and oversteer by blipping the throttle round a roundabout.
You're the second one saying that about the mk1.
I've only driven the mk2, and, now that i recall the spec, it was on koni+eibach, and the handling was just FINE and not great, it was only a car easy to drive, but nothing special.
Maybe i need to try the mk1, there are a lot of differencies between them.