What do you think the best anti-virus is?

[bytem3]

I have been using NOD32 for years after trying out several different AVs. It is a nice balance of control and end-user interaction, with great detection (especially if you enable the webscanning function that scans all code, links, and files going through the ports normally used for surfing). While I usually don't endorse Microsoft products and it does have issues, I think that MSE is a pretty good free AV scanner, although it can be improved by tweaking it - one example is editing the registry to increase the frequency of update checking. Remember, AV software doesn't catch all types of malware as well, so I use it in conjunction with MBAM and COMODO firewall (only the firewall function).