avira is the best. }--computer running fine
avg is the 2nd the best }---work fine, internet fine
avast is the worst. }-- computer will hang until it finish scanning for spyware
kaspersky is the over protected. }--- everything it take care, then it delete everything in the name of keygen, patch, crack in your PC, and first time you cannot surf to internet, it blocking you to there till you exit that anti-virus.
next... coming soon!