I just switched to PS4 from MC5. Grip is somewhat underperforming, but I've just had 100km's on it. Will continue to monitor. My other rude is fitted with RE003 and they had immediate grip from the very go.

I've never driven on a set of CSC3s so can't comment. I've had the PS4s for almost 2 months now and my initial observations are still true. On the dry side, the grip simply is not as assuring as RE003s. On the wet side so far, they are quite identical in grip.