I have run Conti Extreme Contact Sport for 3 seasons now (I drive to/from my DE events) and I love them. For the money I believe they are superior to MPSS. I don’t have any experience w the 4S tires but the grip, noise, and wear of the CECS are amazing. And when it rains, you will be faster than all the Mich cars! Great rain capability too. I have nothing negative to say about them at all. I also run them on my Cay S track car now (used to track the 991.1 4S) and again, fantastic. Guys w Nittos and R7s can’t believe my tires “hang” w them.
So try them, you will be happy I’m sure!

 

I run them on my Boxster GTS for autocross. Such a great tire for autocross and track work.

As has been said, my favorite thing about them is predictability. They are very communicative.

 

Pretty sure there is comparison on line.