I see a lot of people going for these third party drives instead of the apple upgrade. What is the difference in performance? The 128GB upgrade is $90 for me (student discount). SSD's from anyone else are $200+. What causes the difference, and is it worth it? I'm planning on getting the 2.2Ghz 15" MBP. Most of the time right now, I'm a light to medium user, so I really could go with a MBA or basic MBP, but once I graduate in the spring, I'm going to get back into music production, so I think a solid MBP is my best option. I don't know anything about the differences in hdd performance (well, beyond the very basics), so any help would be appreciated. If the third party stuff is a lot better, I may get a 7200RPM drive, and when I start doing audio stuff, I'll pop in a SSD and use the old one as an external.