I use Avast anti-virus and Malwarebytes
I have never gotten a virus on my computers.
I think Avast is the best.
The worst virus I did see (on a friends computer) was one that offers to scan your system for errors and then reports infections and offers to fix them if you go to theor site (for a $39.99 software download)
This piece of $hit was a virus iteself and it took over the browers and so many things I swear I will kill the bastards that wrote this if I eve find them.
It required something from Microsoft to fix too, but its been so long i forget what
If you ever go to a site and it offers to do a virus scan turn off the power if you have to, to avoid letting it complete the process.
Also install Avast and Malwarbytes.
You, Sir, are a steely eyed missile man!