The 1 Panasonic 4X
The 2 YAMAHA 4/41/6S
The 3 PLEXTOR PX-12/4/32S
The 4 TDK 16/10/32
The 5 PLEXTOR PX-24/10/40A
The 6 Liteon LTR-32123S
The 7 Asus 48/16/48