Here, both devices burn and read the discs without troubles. Maybe the quality is better, too? Yes, we’ve got excellent discs here! The new model is a bit worse than the older one in terms of the total number of PI errors and failures. But the difference is really very small.

Beta/Jitter and TA Test (Inner, Middle, Outer)
for the disc burned by the LG GSA-4163B
 
 

The asymmetry is normal – its fluctuations are within the acceptable range. The average jitter rate and its uniformity are normal, too. It’s all right so far. The results of TA Test become another confirmation of the high quality of the disc: the new model maintains the required pit/land lengths well – the adjacent lengths don’t practically overlap in the diagram. That’s a good result all around.

Summarizing the performance of the new model with DVD media, I can’t but acknowledge that the GSA-4163 surpasses its predecessor almost everywhere. I’m only sad that the manufacturer didn’t solve the problem of low quality of burning DVD+RWs at the min speed. The algorithms of burning dual-layer media need improvement, too. But despite these drawbacks, the LG GSA-4163 leaves a nice impression; it is one of the best optical drives for burning DVDs today. Added the excellent results with CD media, we have a device that suits perfectly for burning optical media of almost any type and format.