say what you want, they all work pretty much the same except for norton... Free: Avast AVG Anti-vir Paid: Nod32 Etrust Security suite (AV, FW, SW, Spam)
tried alot of different antivirus programs out myself.... some of those i've tried out bullguard norton mcafee kaspersky ewido avg antivir panda and more ... those i would recommend are bullguard or mcafee internet security... my self i use mcafee internet security now
Well I first prefer to scan my computer for free online on: http://www.trendmicro.com PC-Cillin does beats all of the other AntiVirus softwares.
Ive tried like 10 of them -_-.. Im sorry I am quite hooked into going into virus-running sites -_-" Id say out of all that I tried, Kaspersky is the best.. worst in my opinion will be Norton, they always have some major security flaw.. McAfee isn't bad either
For virus' I use AVG, it hasnt let me down yet. For spyware, I recommend either Adaware, or Spybot S&D.