[1nT0x!c@t3d]

avg, and norton.

maybe i misunderstood but it sound to me like you have two AV programs running. I can't say this is a good idea.

anyway to answer your question. none. I work in IT and AV programs help to keep me in business because none of them stop the current drive-by-trojan installation method of injection.
the only thing that works is a sandbox environment (sometimes) or programs like faronics deep freeze.

nothing beets manual removal of viruses from a live environment, however
there are times when i need to do a quick scan,
as a second backup on a second hard drive i have a set of tools such as Tdsskiller, stinger, combofix, those sorts of things.
the only scanner i use these days is Hitman pro, and that's only to tell me where the little bugger is hiding, from there i just manually remove it.