What is the best antivirus software

There are several good commercial antivirus programs on the market the leading ones are Symantec Norton Antivirus, Trend Micro, Mcafee, Kaspersky and NOD32. There are good free versions as well. We have tested these providers, AVG, Combofix, Avast, AdAware, Spybot, MalwareBytes to name a few that are credible.