The free best antivirus discussion been going on for a long duration and rankings list been going on in yearly basis. Its now your time to know yourself to choose the best antivirus. Does the ranking one antivirus will remove all the virus and the ranking 10 will remove some. The answer is Unpredictable. Finally you should be careful of the virus even though using the Ranking 1 virus. It is finally depends on us to allow or block the virus.
To allow or block the virus from Internet to your PC, you should use a personal firewall(Internet Security) and you can get the free ones downloadable. Always make sure you use the Antivirus with the Firewall, missing either of them will cause your PC infected
As a security analyst, I would suggest to use Microsoft Security Essentials and Avast and coming to firewall – Comodo Firewall and the zone alarm will be a good choice.
Note : You should use only 1 antivirus and 1 firewall otherwise you will face conflict issues and some times will lead performance issues.
Below links can be use to download the Free Antivirus and Free Firewall from the product website.
As I have not mentioned other antivirus or firewall doesn’t means those are not trust worth. The advice was finally on my own choice and experience and survey been taken with my friends circle.