Originally posted by: Jay
DVD-18's are basically two DVD-9's glued back to back. They're a pain in the ass to handle (no label) and their reliability has been questionable.
Except that it's better to have 2 DVD-9's, IMHO. There are also "DVD-14's" which are DVD 9 one side and 5 the other (I think terminator R1 is an example). DVD-18's are basically two DVD-9's glued back to back. They're a pain in the ass to handle (no label) and their reliability has been questionable.