Hi fellow mac users! I'm thinking about upgrading my nvidia whitebook's HDD. I'm considering these options: Seagate Momentus 7200.3 ST9320421AS 320GB 7200 RPM 2.5" SATA 3.0Gb/s Internal Notebook Hard Drive (Bare drive) - OEM Cache: 16MB Average Latency: 4.17ms Parts: 3 years limited Labor: 3 years limited Model #: ST9320421AS Item #: N82E16822148336 Seagate Momentus 7200.4 ST9320423AS 320GB 7200 RPM 2.5" SATA 3.0Gb/s Internal Notebook Hard Drive - OEM Cache: 16MB Average Latency: 4.17ms Features: Native Command Queuing Green features: - Lowest-power 7200-RPM laptop hard drive yet - Ramp load features improve idle power consumption State-of-the-art error correction Fluid dynamic bearing motor Support for S.M.A.R.T. drive monitoring and reporting Support for Read Multiple and Write Multiple commands Model #: ST9320423AS Item #: N82E16822148446 Western Digital Scorpio Black WD3200BEKT 320GB 7200 RPM 2.5" SATA 3.0Gb/s Internal Notebook Hard Drive - OEM Cache: 16MB Average Seek Time: 12ms Average Latency: 5.5ms Windows Vista: Works with Windows Vista Features: Desktop-class performance for notebook computers Massive capacity Low power consumption Quiet Reliable and rugged Tested for compatibility Parts: 5 years limited Labor: 5 years limited Model #: WD3200BEKT Item #: N82E16822136280 Are these the best? Should I look for another brand or model? Which is the best 7200rpm 320gb HDD today for the macbook? (in terms of heat, noise and performance)?? Thanks a lot!