Drive each of them first - don’t make the decision on specs and numbers.
If you want a car to drive regularly, you’ll end up with the Porsche. No other cars provide the performance with the handling and ride you can live with. You might even like the Cayman GT4.......
IMHO, of course
My ride is a lowly ‘11 Cayman S.........far more than I’d ever want in a car.........in my mind, far more beautiful car than all those on your list.....and I’ll never find its limits unless I race it.......
I currently have 3 cars and my fastest car is a 2013 Audi S6 with the V8 twin turbo. C&D tested it at 0-60 in 3.7 seconds. It is fast and a sleeper car. But, I really like real sports cars more than sports sedans (my wife disagrees). I can buy any of my cars of interest for cash so I am not interested in cars that are sort of like i already had. But I have considered a Cayyman GT4 too and getting rid of another car,,,Toyota, Mercedes or Audi. I paid cash for the Mercedes and Audi so I know I can afford the decision.
I forgot I was also looking at the Mercedes AMG GTS.