Hello,
It's not necessarily a bad idea to look at independent test results, as well as see what sorts of certifications candidate anti-malware software might have, at least once you've gotten down to your short-list.
AV-Comparatives
AV-TEST
Dennis Technology Labs
ICSA Labs
PassMark Software
PC Security Labs
Most malware attacks use social engineering. Education can be highly effective in stopping them. Your users don’t need to be security experts.
Here are some excellent suggestions on how to keep your computers, their users and data safe:
http://www.symantec.com/theme.jsp?themeid=stopping_malware&depthpath=0
Hope that helps!!