There is no "best antivirus" for a PC. It all depends on the user's needs, PC performance, working environment, etc. You can browse the list with antivirus applications on the database of Software Informer. From all the known antivirus applications, I can recommend you avast!, AVG, or Comodo Antivirus. I have tested almost all the antivirus products released on the Internet and found these as most known among users.
