I don't like having the dock change in size. I also like being able to just click on any app to launch it, even if I never run more than a dozen at a time. My standard load is mail, ichat, ical, itunes, pages, preview, fireworks, photoshop, coda, adium, camino, and vienna... and sometimes vmware. Now you realize why I said go for 8GB if you can, :-P
