I've been thinking about buying the ram update for SR MBPs of 4GB, but I'm not really sure if it will do much for me. The most intense stuff I really do is use garage band and iMovie (just for fun stuff, not really serious editing), work with data/statistical analysis (not huge files...most data i work with takes up less than 30 MB), play music from a very very large itunes library, browse photos from a large iphoto library, and do lots of internet research. And here or there I might play a 3d game ;P. If I went from 2 to 4 GB, would I actually notice a difference? If not, what sort of stuff would I have to be doing to take advantage of the extra memory/notice improvement? Thanks in advance!