Norton 360
is the mainstay of my antivirus because besides not
heavy, its also very complete. Norton 360 Version
5.1 Premier Edition is suitable for both the PC
offline and online. Because Norton 360 is Norton's
best and most complete product features.

my point of view= BAP OF ALL ANTIVIRUS

DIRECTLINK:-
http://buy-download.norton.com/downloads/CLT/N360P/US/2011/5.1/ESD/N360-PREMIER-ESD-18-6-0-29-EN.exe
softpedia link:-

http://www.softpedia.com/get/Antivirus/Norton-360-Premier-Edition.shtml

TRAIL RESETTER LINK:-

http://www.enterupload.com/vbydpfpl0ri9/N.IS.AV.360.TR-BOX.2011.3.3.1.rar.html