OK, I've been using AntiVir. Thinking about AVG.
AntiVir has one very annoying "feature"; continues 'net access (mostly receiving). Don't know why; it has no auto-updater, and CONTINOUS? And if I engage ZoneAlarm's internet lock, the AV gaurd program shuts off; unlock it, it's back on. WTF?
So I'm using AVG right now.
Norton is 100% out; I've seen too many virus' that can shut it down (not good with the hunted kills the hunter). McAfee? To slow, too much $. Sticking with the free stuff.