I'm considering getting the 300GB Seagate Barracuda 7200.9 SATA 2 HD to use as a second drive for video editing and storage. Does anyone know how it compares sound-wise with the 120GB Seagate Barracuda 7200.7 SATA/150 HD? I've read some mixed reviews on the 7200.9 series versus the 7200.7 series - I'm interested in feedback from anyone who may have first hand experience.