I'm aware that there are probably a dozen of these threads around in the forums, but if you have the time to tell me to search it up, then you have the time to answer my question. I am fully aware that this may void my MBP's warranty. I've decided to go with either the 500gb 5400rpm WD or Seagate. I'm just wondering which drive is more reliable and faster. Also, when installing the hard drive, is it ok to use a magnetic screw driver. Somone told me that there's an application called Superduper. It clones the original hard drive to make the upgrade easier. Is this a good application, or are there better options? Thanks.