What would you need 8gb of RAM for? I'm not being mean, I really want to know because I am planning on getting 4gb for mine for AE, FCP, and the other programs in Pro Studio 2. Would 8gb show a much bigger improvement over 4?
For those of us that use progressive download (stored in RAM) for streaming lectures and load about 5 at a time it lets you actually do other things on the computer when you have them loaded. Fortunately though, I've been a good boy and kept up with them this year instead of having so many at a time. It was definitely a problem with 2 GB, but 4 GB on my iMac has improved things immensely.