I use Eset Smart Security Premium. I have found it very useful for not only antivirus, but it includes additional tools such as a password manager, secure data (it opens up a protected page for doing online banking), and a security check for your home network. I am a bit of a techie myself, and after trying a number of a/v programs I have found this one as probably the very best for what I use it for. The version I use is a paid version, but well worth it for my peace of mind. I also use Malwarebytes (paid version) for checking for malware.