For a more neutral stand point, here is a comparison site.
http://www.av-comparatives.org/
Check out their Oct 2012 File Detection PDF. Oddly it covers a ton of Anti-Virus programs except Norton! What? Odd.
Avast, AVIRA, BitDefender, BullGuard, eScan, Fortinet, F-Secure, Kaspersky, McAfee...