But what about DVD+R discs?

Plextor PX-716A burning/reading a 4x DVD+R disc
 

Without any slowdowns and without any errors, the drive successfully did the reading and burning of the blank at 4x speed. So, let’s get right to the quality check.

As you see, the results of the two discs are comparable, but the PX-716A again improves upon its predecessor. The total number of PI errors has diminished by 42% (from 14,972 to 8706), and the total of PI failures by 84% (from 460 to 81). The performance of the PX-712A had seemed already excellent, but the manufacturer succeeded in making it even better in the newer model!

Beta/Jitter and TA Test (Inner, Middle, Outer)
for the disc burned by Plextor PX-716A
 
 

The asymmetry is normal. It deviates but slightly from the zero mark, mostly on the outermost tracks. The jitter rate is normal, too, both in peaks and in average. TA Test also shows the drive’s ability to keep the pit and land lengths as they should be. The neighboring zones almost don’t overlap in the diagram, while the total quality score is somewhat reduced by the non-ideal Peak Shift (the average length of pits and lands is shifted relative to the standard). The result is overall excellent, though.