If you really want to have control over what enters your system, then yes. For the uneducated user, the paid versions are always better then the free versions. I, on the other hand will never use a paid security program. All it takes is a little understanding on what infects you. You have to know where to go and where not to go on the web, you have to watch what email you receive and don't open anything from someone you don't know and other things.