Hello, I have the original 320gb HD on my early 2011 MBP. I need more storage, preferably 1TB, but 750gb would also work. Is my best option the Seagate Momentus XT 750 GB 7200RPM SATA? Are there any other options that are good? Also, I want to buy a blank enclosure for my current 320gb drives...does anyone recommend any cheap ones? Thanks.