I understand that Acer only recently started making their own drives, Acer CDRW 6x and less are rebadged. The new Acer CDRWs haven't been out long enough to judge their reliability. Acer (Aopen) CDROMs are decent but not as good as Teac or Toshiba. The 8x and 10x burners are not burnproof. They come with 2, 4, or 8meg buffer. There is a new 12x burner (Acer or Aopen?) with some type of buffer underrun technology like burnproof, but I don't think it's widely available yet.