The best anti virus in my opinian: Free version = Avast anti virus paid version = Kapersky anti virus
i use ESET NOD 32, its the best, but it needs to be purchased, but if u r looking for a free best antivirus then go for Avira Antivirus, i have used both of them and they are best and take low RAM usage of computers.
Eset Nod32 Antivirus is one of the easiest antivirus programs to use. The whole program is designed to accommodate beginners, and doesn’t require a lot of tweaking and/or manual maintenance to keep running properly.
I use Norton V4 But i have also used avast and avira on other computers and they are very good !! Dan
i am using symantec antivirus.............its really nice in the world...i have licence version of that....
For many years I used Kasperky and Zone Alarm ... Since my system has slowed down, I was compelled to exclude real-time protection ... I used it only as needed ... After several years of troubles with the new version of Zone Alarm and licensing Kaspersky, I decided to turn my list ... Now I use AVG ... So far I have not had any problems ... In addition I using and Ad Aware ...
Everyone have their own experience, opinion and need, I have tried lot of free version of anti-virus but at the end of day..Avast is still my Favorite