[QUOTE=tai69;2089495]Are all DVDs with the same media code, identical & identical quality.[/quote]No.
Does CMC make a better quality DVD for Philips rather than TDK & Maxell despite the fact they have same media code?
It’s not that simple, but it’s not far from the truth to answer: yes.
This culture of “mediacode is all that matters” has become a very nonsensical thing. In the old days, maybe it was a good thing to choose discs from the mediacode only, because compatibility with firmwares were perhaps more widely important than absolute manufacturing quality.
Now it doesn’t make sense. Whatever some like to write over the Internet, there ARE different grades of discs on the market, and some brands seem to consistently sell the lower grade, and some other brands the higher grades. This is mainly true for large manufacturers like Moser Baer, CMC and Ritek (see Ritek: mainly crap under Rimedia or Arita, decent to good discs under Ridata or Traxdata, with lots of in-the-middle stuff). But even Taiyo Yuden has different grades! There is the “value line”, and also TY discs sold as Verbatim are often of lesser quality than both TY “regular” lines or Verbatim’s own MCC discs (the ones sold as Verbatim, that is (MCC under other brands is, very often, either fake or low quality).
So pick mediacodes for drive/firmware compatibility, then pick brands (or lines, in some cases) for quality. I’m oversimplifying, but that’s the idea.