I just went and bought a new 20" iMac (replacing my previous Core 2 Duo 20" iMac...yeah not much of an upgrade except for aesthetics, but with the student discount and free iPod deal I came out a little ahead after selling my old iMac ), and of course it has 1GB of RAM in it. All of my Macs (my PowerBook from work, my wife's MacBook, and my old iMac) have 2GB of RAM. I'm trying to decide if I should order a 2GB module for the new iMac for about $120, bringing it to 3GB, or if I should gank one of the 1GB modules from my wife's MacBook for free, leaving her with 1GB. She doesn't do anything but browse the web and listen to music. She doesn't really care, I'm the master of the computers around here. Would 3GB be a worthwhile improvement over 2GB to justify $120? I generally am pretty intense, my standard fare of open apps being: a dozen or more FireFox tabs open, EyeTV running, Adobe Illustrator and/or Photoshop CS3, Locomotive and MySQL, TextMate, Terminal, Adium, iTunes, Quicksilver, Transmit, Parallels (with 256MB for itself), Transmission, Vienna, and maybe one or two others. 2GB has always served me pretty well, if by a narrow margin. Anyone go to 3GB and notice a difference? Is "stealing" from my wife's computer too desecrating to the MacBook?