newegg.com maybe
I got five free double layer 4x ones with my LiteOn dvd burnner.
Well nero does support dual layer. I burned one already. Though, expert setting is something else I guess because even with dual layer it says max is still 4600MB. Yes dual layer dvd r is setting in drive tray.
And that something else, my bet is that it only applies to single layer.
Oh and I have a LITE-ON DVDRW SOHW-1633S if your wondering.
http://www.liteonamericas.com/us/DVDRW_1633S.htm
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