Which of these Anti Virus is BEST?

Which of these Anti Virus is BEST?

1. Avast (Free)

2. AVG (Free)

3. AntiVir Classic (Free)

4. AOL Active Virus Shield

5. ClamWin Free Antivirus

I want one that is light and doesnt slow your computer down and protect you from all source of virus. :) Thank you!

Which of these Anti Virus is BEST?panda

AVG

Which of these Anti Virus is BEST?suzuki

if you can pay for antivirus I advise you to buy

Kaspersky Anti-virus
You can download some best antivirus

programmes like Norton, Avg at http://www.fixit.in/antivirus.html
What happened to my answer recommending Nod32 and bunch of other information.

http://www.eset.com/download/index.php

http://www.eset.com/