What is the best choice for Mac anti-virus?

Ok, I’m convinced. I’m finally going to add anti-virus software to my Mac. It seems like there are more and more events where attacks are targeting Macs, and I guess that it is the prudent thing to do. The thing is, I’ve been using Macs without anti-virus software for well over a decade, so I don’t even know who to look at.

Story added 27. April 2012, content source with full text you can find at link above.