I've just purchased a used Quad-core (2.8GHz) 2010 MP to replace my 2006 original 1,1 version. In my present (2006) configuration I'm running Lion with my system and home folder on the boot drive, but I've moved the bulk of my data (all image files, the iTunes folder, Window VM) to a separate HD. The new machine will have a 128GB SSD, 32GB RAM, and will be running 10.8. A few questions: 1. In the short run, can I just move over my existing boot and data drives to get up and running as quickly as possible while I build my new system? 2. Obviously the boot drive should now go on the SSD. Is there value to moving the entire Home folder (which would then include ~/Library) off the SSD to a HD? 3. I probably won't be needing much of a scratch file (for Photoshop) due to the amount of RAM I'll have, but is there value in moving that off the SSD? 4. The new (used) machine will come with ML and have some apps on it for which I won't have the install disks. What's the best way to merge my old system with the new, or should I go through the tedious process of manually installing all my existing apps into the new system? 5. Given my setup, how much does it matter to have my non-SSD drive (the HD with all my data) be a particularly fast drive? Is a "standard" (say, WD black), enough? Any recommendations? 6. Finally, I've read that one shouldn't keep an SSD filled too close to capacity. What should I aim for to keep free? Thanks, as always, for everyone's help.