Thanks for the link but I think this review is NOT really a good review (not from an enthusiast's pt of view)
Numerical values indicate the amount of PI (Parity Inner) and PIF (Parity Inner Fail) errors found in the written disc and these would directly indicate the write quality of the drive on the various discs tested. Ideally, the average values for PI and PIF for a readable disc should not exceed 280 and 4 respectively.
well well - it's is firstly not AVERAGES which should be below, but the PEAK and also - the PIF is Parity Inner FAILURE (not Fail)
Also the not-so-clear shot of the PCB seems to reveal a driver IC not from Panasonic ?:not sure though