When I was a defense contractor we used NAV. When I bought a machine, McAfee came with it and was soon uninstalled. I have been with AVG for two years now, and I love it. I occasionally put NAV on my sandbox, and it never finds anything that AVG missed. I also do the same with all new releases of Panda, and whatever else I stumble accross in my cyber travels, and nothing has ever found a legitimate issue that AVG missed. In fact, sometimes the other apps find legit things and claim that they are nefarious. FWIW, I also run Ad-Aware, Spybot (with Tea-timer activated), MS Spyware removal, and PREVX. I am behind Agnitum Outpost Pro (for networking), and my sandbox is also currently evaluating PestPatrol 5.0.1.5. It has found nothing that the others missed. In addition to that I am behind a retail Linksys Firewall, natted, with the defaults all changed to obscure settings.
Defense in Depth needs to be anyone's mantra if they are interested in security. All of the apps listed above can be found at
www.download.com.
keep yourselves safe!