I've used NIS for some years now and been happy with, even if it is a bit slow sometimes. A couple of people suggested that I should move to Norton 360, because the virus checker is better and its faster. I had a look on the Symantec page and the only difference between the two seems to be that 360 has the PC Back up and Tune-up features (which I don't use) and NIS has some extra virus features. Sound to me like I'm better off with NIS, what do you think?