For corporate use, there is no comparison. Ever since we installed this, we've had ZERO instances of infection from any of the new viruses, including Nimda, Sircam, and Magistrate. It even protects people while surfing the web. For example, a website I know of got infected with Nimda, and so it infected all html, gif's, jpeg's etc. Well, when our users visited that site, Norton scanned the files, cleaned them, then let the user view the page. The admin console is the best product I've seen so far. Even Microsoft hasn't pushed the envelope with the MMC as far as Norton has.