I received a Trend Micro Premium Security licence in a package when I purchased my iMac 2 years ago and the licence expires in February, unfortunately I can't afford to renew it.
So I am looking for recommendations and advice for free Antivirus software.
I have been researching the available and recommended ones online and so far I'm leaning toward Avira.

What do most of you use and why ?

Any help and advice would be appreciated

Cheers Cargo