I have Koni Sport (adjustable yellows) on my NA Miata and Koni Special Actives (red) on my '99 986. The Miata is set up for autox and the yellows do that job well. On the street (especially over broken pavement) I prefer the job the red Special Actives do in my 986. And at speed taking corners on smooth pavement, it would be hard to notice much difference between the two.
There was a very detailed article published by TireRack years ago when the Special Actives went by the name of FSD (Frequency Selective Dampening), before they were updated:
https://www.tirerack.com/suspension/tests/koni_fsd.jsp
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