I used F-Secure many years ago. Now I have no antivirus (using Linux Mint MATE).
If I would order an antivirus, it would be Eset or BitDefender. From what I noticed in the past, I consider these as the best. I basically took multiple viruses from different clients and tested each antivirus in a contained environment. Eset and BitDefender detected them all, while other antivirus software did not see some viruses.