First, yes there are several LiteOn reviews! Check here:
and specifically of the last LiteOn 52x32x52 writer:
Also there's a review of a new 54x Mitsumi
But it didn't like all the media, and there were some other negatives. LiteOn's newest writers are highly rated as being able to write great to all media. LiteOn is a much better company than Mitsumi. In fact I never even heard of their CD writers till now.
You were asking about what I meant about the jewel cases and the film. I just noticed that even though I had some discs in jewel cases, a smoky film developed on the read surface on a couple discs that I had near my CRT monitor. Since the jewel case isn't hermetically sealed contaminants can get in. Even bugs. It's good practice to seal each jewel case in a ziplock bag and even suck out the air as you close it.
Who knows maybe CDs can warp. But they are small and light so I am skeptical. No disc is perfect--so there is always some vibration. I don't know that keeping them flat or upright would matter.
You are using good media which is good.
I think you didn't read my post so carefully--I mention K-Probe for testing CD write quality. BoSkin has posted a scan from K-Probe. This only works on LiteOn drives. The Nero tools keep improving and often show both C1 and C2 errors. K-Probe does this. By using K-Probe you can see that discs written really slowly don't always do better than discs written faster.
The discussion about 99 minute CD's: Yes, overburning is not standard and can cause problems on readers. Slight overburning is safe. Extreme overburning is more risky.
I believe that a better choice for long-term archiving of WAV files would be to store them on DVDs. You can put 6.5 CDRs on a single DVD. The media price is about equivalent now.
Another thing you mention: "Because the copy of the copy and so on get not better in quality I try to produce CDs with as less errors as possible."[B]
This is not true at all--not with digital data--the copy of the copy can easily be better than the original--the exact data is read and re-written--if the media is of better quality the copy would be better than the original. Not that it would sound any better--a copy of a digital file is the same exact file--there is no difference--the question of quality only applies to the integrity of the media itself.
However in the case of audio CDs where there are no actual "data files" to be read, "RIPPING" involves just reading the data stream off the disc. Since there are no CRC checks during the read process data can be read with errors causing crackles or missing audio. This is why programs like EAC are used to RIP the audio files off audio CDs. Most drives now have "Accurate stream" which helps ensure that the audio data is read correctly.
HOWEVER, if you write the WAV files to the CD's as DATA, which means that when you put the CD into a CD-ROM drive, you can see the WAV files themselves (each is about 50 megs) and copy those files over, then you are not ripping--you are reading computer data files.
Now, when you read computer data files off CD-Rs (and CDs) you CANNOT have any errors or you WON'T BE ABLE TO RETRIEVE THE FILE AT ALL! As a CD-ROM drive reads a file, the file is CRC verified, and if the process fails the computer will stop with an error. That's why it's so important to check important data written to CD-R with a CRC checker.
You could create an ".SFV" file of the WAV files before you write them--and you also write the .SFV file to the CD-R. Then you double-click the .SFV file and it will go and read all the WAV files on the CD to make sure the CRC matches.
Lemme know if you need me to clarify anything.