I had intentions of changing my rims. But considering the amount of money spent, I'm not bothered. So taking into consideration that the tyres *may* be chewed, I opted for these FK510 against the PS4. If money were no object I'd definitely go for the PS4.
Anyway so far in terms of NVH it's definitely ahead of the Pirelli P7 RFT. And the steering feels lighter, BUT it doesn't feel as sharp/responsive -- feels slow to input. I guess the P7 had really stiff sidewalls, and that contributed to steering response.