Could I get some opinions of the best free antivirus out there for Windows 7? I am currently using Avast, and overall I have been happy with it, but it appears to be conflicting with my new Logitech G700s wireless mouse and I want to try something else. I had BitDefender a while back, but I was getting too many false positives on trusted sites, and I could not find an exceptions list anywhere. I've also used AVG several years ago until their issue where they broke the internet, and I used MS Security Essentials until they lost their rating on av-test.org. I'm thinking maybe trying comodo? Any suggestions/discussion appreciated!!