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?

Judging by some of the previous posts in this forum, every one of you is full of shit.

I've had AVG pickup viruses that norton wouldn't, and norton pickup viruses that AVG wouldn't. AVG is far more lightweight, and free does mean you get what you pay for. the professional version has a better detection engine.

YMMV.