I used to be a hugh McAfee fan, but have turned, like most, towards Norton 2001. They seem to catch more, and I've noticed that McAfee tends to cause a lot of problems with cpu's, especially laptops. I've really become a fan of Norton's liveupdate, as it's just finally become a reliable program, and Norton has the best Virus database around. McAfee just kind of tells you to run the program. Norton tells you which regestry entrys to make sure are gone, which files to make sure to delete, ect... I've found Norton to be much more through and has a quicker response to a new virus.