I´m German and my english is not the best, too.
The Sony CD-Rom is manufactured by LiteOn and not a good drive, i think the AOpen is still better.
Can you get other drives than the AOpen?
Fact is, that all good manufacturers stopped selling CD-Roms.
WD: WD6400AAKS, WD10EALS, WD20EARS, WD10EALS
Hitachi: 7K1000.B 1 TB, 7K1000.C 1 TB, 7K2000 2TB, 7K3000 2TB
Seagate: ST2000DL003, ST31000528AS
Plextor PX 755 1.04
Benq DW 1670 1.03
Optiarc AD 7173A 1.01
Asus DRW 20B1LT 1.00