Ibanez PFR-4 bass pickups. How do they stack up against some others? ANy ideas?

[Tigerclaw_x]

I got my hands on several PFR-4 pickups. The question is... just how good are they?
I have several basses which, if it is prudent, I have no problems replacing the pickups with PFR-4s. Just few questions?
How do PFR-4 compare to EMG-HZ?
How do PFR-4 compare to EMG-SSDs?
How do PFR-4 compare to old Washburn W541 pickups from XB400?
How do PFR-4 compare to ESP stock pickups?

Thank you

D