I have a quick question (well hopefully quick): I want to get one of the new imacs (probably the low-end 27") and equip it with an SSD drive. I'm trying to be economic and smart about how I do things by not putting the SSD inside the case, where it is difficult to change out unless you are good at fiddly electronic stuff (which I'm not). Given the speed of the thunderbolt ports, should I buy a standard configuration (no SSD), wait for thunderbolt enclosures to come out, and then just run an SSD in an external thunderbolt enclosure for the operating system? Would I lose any performance this way? Would I save money this way? In the configuration apple supplies, how are the SSD + 1 TB/2TB drives set up? Is the operating system installed onto the SSD, and all user files (e.g. iphoto, itunes etc.) on the 1TB drive? Thanks for any advice and thoughts.