I've been a religious reader of this site & treat their reviews as the "Bible" of Anti-Virusl Applications.
Linked is their review of the major Anti-Virus applications and how they stack up against one another. I personally use Kaspersky & swear by it, but there looks to be a couple that are making headway.
Check it out!
I was going to attach the .pdf file, but not allowed, so here's the comparison:
http://www.av-comparatives.org/seiten/e ... 007_02.php
Anti-Virus Application Comparative
Anti-Virus Application Comparative
Intel Core2Duo e6600 @ 3.78GHz/1.47v n ASUS P5N-E sli n 4x1GB Crucial Ballistix Tracer PC2 8500(currently 5-5-5-15-2t) n FSP Group (Fortron) FX Series FX700-GLN-E 700W Power Supply n APEVIA X-Navigator ATXA8NW-AL Case n eVGA GeForce 7600GT 256MB GDDR3 n 1.25TB Seagate Barracudas(3 setup as hot-swap) n AuzenTech XMYSTIQUE7.1 Sound Card n Innovatek Eheim HPPS Plus 12V WaterPump n Danger Den TDX CPU block n Swiftech MCR320-QP (3x120mm) Radiator