Many thanks for spending much time to respond to my unsophisticated post, but then I merely wanted to know whether LG 4163B is a good writer. I know that Audiodev and other professional equipments are widely used in the industry for internal purpose. Câ€™t is the only source constantly publishes DVD quality test results using Audiodev CATS system. I inadvertently mis-phrased the sentence. I read Spathâ€™s post in your quote some time ago, and I agree with him except that I feel his negative attitude towards Câ€™t is too strong.
In my opinion, a disc of high writing quality should give low error rates when scanned by professional testing devices and by as many consumer readers as possible. I give more weight to the Pulstec devices, because they are pickier and more parameters are tested.
Prompted by your suggestion, I read test scans in this forum; I was surprised that there are so many already. It took me quite a while to go through them. Some of my thoughts after this reading:
Discs written using firmware version A100 also give very low error rates when scanned with consumer drives in most cases, so the situation may be more serious than I thought before, though it still cannot be excluded that writing quality has been improved in the newer versions.
Benq 1620 and LiteOn 1633S were used in most of the scans. The two drives and many other DVD writers show excellent capabilities in reading DVDs. Naturally the PI/PO error rates reported by them are low in most instances. The data are pleasing but may be at least misleading sometimes. Therefore the data I have read still cannot eliminate the doubts casted by Câ€™t.
I want a writer that will write discs to be regarded as high quality by as many readers as possible. So good scans by only one or two DVD writers good at reading are not enough. Faced with choosing between LG 4160B and 4163B, I will now settle for 4160B, which is highly rated by Câ€™t and by others.
Although Pulstec device is not â€œtheâ€ standard, it is essentially the de facto standard. Most likely LG also have some Audiodev or similar devices in use. It is upon LG to prove that 4163B can maintain the excellence achieved by 4160B in writing quality. It will be nice if you can pass the words to people at LG to put their own tests on its website. But you and other open-minded LG owners can also do something if equipped and willing to. My suggestion is to use LiteOn 167T DVD-ROM drive to scan discs burned with different firmware versions. The drive is to date the only one to give scan profiles quite close to those by Audiodev. In my previous post I thought many drives will serve the purpose, but reading the many scans in this forum has changed my thinking.