I have only used 2 different antimalware programs. The first one I used was malwarebytes, and now I use ClamWin. It's not pretty, but it works. First I only had malwarebytes, but I discovered clam AV, which I wanted to try because it is open source. I couldn't get it to work, so I replaced it with clamwin, which is the same, but with a GUI. Later I uninstalled malwarebytes to free up space, and now I only use clamWin. I don't think it's the best, but the virus database is updated often, and as long as you know what you're doing, an antivirus isn't really necessary in my opinion.