My results so far with media have been mixed.
I have had spotty results with Verbatim DVD-R (2x).
-7 good burns, 4 bad. This is a very disapointing ratio.
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Memorex DVD-R (2x) .
-3 good none bad.
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Memorex DVD+R
-10 good, none bad - awesome!
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.....I'm going to write some soon with some MAXELL DVD+R.
The package claims 4x, we'll see.