This question comes up once in a while and the best antivirus is still you. You decide what sites to go to and what to install.
Kees answers about the usual names at this next link.
You didn't define best. Best as in number of virus in their database, best in system load, best in cost, the definition is not in your post. There has yet to be any antivirus made that protects again user actions. So if you want to install a pest all of them allow it.
Could you members tell me what is the best anti-virus software available in the market i have been using microsoft security essentials dell customer care people tell me you should use McAfee as this has been proved the best Anti-virus softwar