Which is the Best Antivirus in the world and its features

As the awarness of Computer virus are growing the Virus programmers are getting smart enough to find every loop hole in security of computer to hack in and infect the system though there are many top antivirus in the market not all the antivirus program are 100% effective in eliminating all the threats..... so to protect your computer from the virus,malware,torzans and spywares combination of antivirus and users alertness is necessary.... so what is the good antivirus and what are the basic features to look for? below are some of basic features before choosing a good antivirus:-

• USer Friendly: First of all the Antivirus should have user friendly interface and the options and security features should be such that any one who is naive to computers should be able to understand it.
• Effective Cleansing and Detection: Truly capable anti-virus software thoroughly cleans, deletes or quarantines infected files—keeping them from spreading throughout the hard drive or network.
• Updates: Most Effective Antivirus is those which scans the system based on heuristics and updated frequently with new list.
  
• Feature Set – A well-rounded feature set allows anti-virus software to provide absolute protection. The best programs are those that offer a wide variety of tools, from basic real-time scanning to more advanced, heuristic scanning and script blocking—when it comes to virus protection, the more options the better.
• Ease of Installation and Setup – Anti-virus programs should be a breeze to install, making it easy to go from installation to initial scan in just a couple clicks of the mouse.
• Help Documentation – High-end anti-virus software come with plenty of help, including support via email, or over the telephone. There should also be online resources, such as knowledge bases and FAQs available for quick and convenient help.

Some of the Best Antivirus after reading reviews and personally using some of those :

1. Bit Defender (this is probably no 1 in the market)
2.Kaspersky
3.Trend Micro
4.ESET Nod32
5.F-Secure
6.Norton Antivirus
7.McAfee
8.AVG
9.Panda Security
10.

This list is based on their relevance and updates and may change with time and new implementation.