----- Original Message -----
From: "Mike Mokrzycki" <[EMAIL PROTECTED]>
> Are there supposedly any manifestations of poor quality discs other than a
> higher coastering rate?
yes, and you called the big one out yourself. longevity is the biggest
reason for using only "good" disc's.
with the exception of a few brands of disc's that don't like to be burned at
24X, i have never had any "real" issue with coaster rates. the longevity of
the disc's is my sole reason for dropping the extra $0.20/disc on good
disc's
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> Is it alleged that in the burning process, cheapo
> discs are prone to data errors that might not cause coastering but (if an
> audio burn) result in degraded sound quality --
no. you are correct. if a disc doesn't coaster, then you do have the correct
data on the disc.
the question is "how long does it stay there?"
i do allot of B&P's, and have always allowed the people who are getting
their B&P's from me to use whatever brand they want to send me. out of all
of them that i have done, i have never had a disc that didn't coaster, that
wouldn't also pass the md5's.
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> Also, assuming that successfully burned discs are stored/handled properly,
> is there any suggestion that "inferior" discs somehow degrade over time?
> Considering that CD-R hasn't been around all *that* long, have any
> controlled studies been done that in some way mimic the aging process?
yes. that's the big one.
when you think of a cd-r as the liquid filled sandwich it is, and the
"jelly-filled center" (a.k.a. the die layer) as being the most important
part (and the top coating being the secondary part), then you've found the
crux of the issue.
the life of the die.
there are good recipes for the die, and there are bad ones. the generic
brands use the cheapest dies, and they don't last. the good brands use good,
and they do last : )
there are a few people around here who have done various things with
hanging various brands in a southern window, or leaving them in the back
seat of a car.
from what i have been told, it seemed that misui's have done the best,
with T.Y. made disc's (branded by various companies like fuji and hewlett
packard) have come in second place. the generics have never done well at
all.
this page is VERY outdated (in regard to who makes what brands of
disc's), but it still answers allot of the "why" type questions>-->
http://24.93.200.44:5150/advisor/cd_quality.htm
yet another factor to the quality of the disc's is the top coating.
after time, the metal layer on the top of disc's can start to flake, and
when the metal layer comes off, it takes the data (e.g. die layer) with it.
i have always preferred the HP branded T.Y.'s to the fuji branded T.Y.'s
simply because they have a more heavy duty top coat. other than the top
coat, they are both the same disc.
i discussed this with a friend who disagreed with my logic; i said that
the thicker top coat was more protective, so i think it is better, while my
friend said that the thicker top coat would make the disc more brittle, and
there fore more likely to crack, then flake.
i can see both sides of that, but the coating being "rubbery" on the
HP's, i still think i'm right....we'll all know in ~20 years ; )
the better the top coating, the less likely flaking will become an issue
for you (or so is the belief of most of us, anyway ; )
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> p.s. I don't believe valid discussion on the etree list is ever a "WOB"
but ...
it's not : )
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love2all
brothercrow(~): )
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http://etree.org/faq_full.html
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