I am thinking of buying an SSD and a Data Doubler soon, and I have a few questions: 1. Right now I have a Western Digital Scorpio Black 750GB 7200RPM HDD in the main bay. When I buy the SSD/Data Doubler, I'm thinking of taking the WD and putting it in the opti-bay. Is that a good idea? 2. I'm new to this whole SSD thing, so I'm thinking of buying only a 64 or 128GB SSD for now; I have about 400 GB of files, but I can put all of those on the HDD, and use Time Machine to back up as well. Is that a good idea? 3. Kind of the same idea as #2, but in a different way: how will the performance be if I keep all of my files on the HDD, and just use the SSD for applications? 4. The biggest reason why I want to buy an SSD is performance. I have around 30,000 photos in iPhoto, and it takes time to open. 5. Last question: which SSD to get? I have a mid-2010 MBP 15", so I'm pretty sure that the SATA 6 is no use to me. Just not sure what would be the best. Any help in this matter is greatly appreciated! Thanks!