Best antivirus thats easy?

So my office is gonna give up on Norton. Thank god!

But I am trying to figure out what is the best alternative antivirus out there that be good for work use.

ZoneAlarm Pro is an option since its an all in one package with firewall etc but I don't know how great is their anti-virus.

And what about reliable open-source antiviruss?

>>7
In what way does AVG suck? Did it fail to detect the viruses you downloaded by going to www.hotlesbianpreteenmatureblowjobs.com.net.ru with IE 5.0?