Keep in mind PS4 and PS4s are different tyres.
The PS4s is the new PSS, the PS4 is still a sporty tyre but 1 step lower than both the others.
I've got PSS on my m240 and they pretty awesome, on track they could handle 5 laps of torture before letting go some grip due to the overheating.
On my wife's Mini I got PS4 on, very very good on wet, less noisy but the tyre feels less direct than the PSS.
These vid can be useful to decide
PS4 - PS4s - CUP2 Comparison
PS4s - SuperSports Comparison