At work we use Mcafee Enterprise Policy Orchestrator to manage computers using mainly the mcafee thin client virus scanner, pretty much the same thing as mcafee virus scan. It works well, mainly because mcafee releases updates once a week, always on time, as well as periodically as issues arise. I like mcafee because of the manageability and prompt updates. I use Norton at home just because that's what I have and I could care less if I get a virus. I just format and reinstall everything again. Norton is pretty good with their updates too. I just don't pay as much attention to them as I do to work. Either one will be good, I think its just about money. Is this for your personal use? NAV costs $10 at Best Buy.