AVG for me. Have only ever had Norton once and never again. I am sure improvements have been made in the last 4 years but I still prefer AVG. It is what you need and no more, not full of rubbish. For example I use Google chrome instead of IE for the same reason. Google surfs web pages and has useful tool-bar applications that I may have if I wish. But they are not forced on me. Whereas IE is full of unnecessary crap!