Hello every one
 
i have Dell Inspiron 1545.  
had got 15months of free McAfee with my Dell Laptop. it is expiring dis weekend.  
 
wanted to know which is the best antivirus??  
 
i use internet most of the time n even have to use many pen drives/CDs.
many times i connect my McAfee -scanned pendrive on my colleagues PC's. their antivirus software can detect many trojans etc (which my McAfee fails to detect)
 
 
i do lot of downloading (with Torrent n without also)
 
is it advisable to buy antivirus for 3yrs duration??  
Thanking you in anticipation

See "Le Meilleur Antivirus au monde" thread.
Thanks.