Like Jurak, I've used AVG free for several years now... but I can't honestly say it's the "best", because I've never had a problem for it to deal with. I tend to be ultra cautious in my computer use (when I'm not playing games <img src="/ubbthreads/images/graemlins/biggrin.gif" alt="" /> ). Definitely low risk insofar as internet use goes... but do, being paranoid like all sensible folk, maintain the usual arsenal of firewall, anti-virus software, and various other clean-up utilities.
My lineup right now consists of AVG Free (with email plug-in disabled), Comodo firewall (on a standalone system with a very simple configuration, which may be why I've had better luck with it than Mea!), plus periodic use of Spybot S&D, Lavasoft's Ad-Aware, and CCleaner.
