Comodo - install & forget.
This is the Comodo who think so highly of their antivirus 2.0 product (which never got out of beta), that they recommend installing someone else's product until 3.0 is released? And on 22nd September, a company rep said of CAVS 3.0 beta "CAVS3 is just a baby right now so of course AVIRA and avast! would have better detection."
Well, I quite like the firewall but I'm not going to be using their antivirus anytime soon.