I have a mid-2007 Macbook 2,1 and with a busted optical drive making terrible noises, I'm set to replace it with another drive. I've already bought the caddy and the SSD drive, but I'm not sure whether I should move my current HDD to the optical drive's spot or place the SSD there. From what I gather, I'm likely to get more speed and a smoother start-up if the SSD is in the original HDD spot, but I'm worried that the HDD won't be well protected in the optical drive caddy (since it won't have the original drive's motion protection). So my questions: How essential is it to keep the HDD in that spot with the motion protection? Will it do fine without it? Those that have put the SSD in the optical drive's spot, is your speed still significantly better? Are there any problems booting up from the optical drive's spot, or any problems with hibernation? Thanks in advance.