Long story short, I have somehow damaged my main external HardDrive by removing it prematurely while my MacBook was shutting down, but luckly i backed it up that same day. I have tried some basic repairs with no success I will try a few more things later. due to this I will like to add some more redundancy to my setup. My questions are 1. I plan on adding a dual HardDrive setup in my MBP with one being a SSD for my apps and a 500gb or 750gb for storage. Is it worth me spending the money to upgrade my current 750gb 5400rpm HD to a 500gb 7200rpm HD? Will I notice a significant difference between the two considering it will only be used or storage?