Here are my sharing after using 3 sets of Pilot Sport 3 and a set of Primacy 3 ST. The new version 4 should be improvement over the version 3. Both are good tyres designed with different purpose in mind and their difference shows when you test them to the limit. For daily drive I’ll still go for primacy although the slight disappointment during genting run, it’s still a decent tyre. If you want to bring up track day then these tires isn’t for you... go for slick tyre instead.

Primacy series:
+long lasting thread life(~60k km)
+silent and comfort(marshmallow like)
+good grip
+cheaper
-soft tyre(some ppl like it hard)
-not recommended for super hard driving(it still can but ESP/ESC will light up often)

Pilot Sport:
+superb grip(pilot super sport lagi powahhh)
+hard corner/touge oso can
-Noise, vibration, harshness is acceptable but definitely lose to primacy
-shorter life but still acceptable(~40k km)
-pricier