All three are excellent choices with high detection rates. AVG provides good malware protection and useful features, Bitdefender is known for its minimal system impact and top-notch detection, while Kaspersky offers great protection and user-friendly interface. It largely depends on your personal preferences and requirements.
Kaspersky for me. Very light and excellent protection although I fully understand why some are reluctant to use it. Bitdefender has never been light for me.