Hello
Bitdefender : excellent Web filtering, excellent detection rate, Ransomware remediation, excellent Machine Learning AI, anti-attack, knows how to roll back in case of infection (ATP) etc...
Kaspersky : Excellent web filtering, much more up to date, Kaspersky Security Network much more responsive to new threats, remediation, many more modules, lightweight etc...
Even if Bitdefender is strong, it tends to be heavy, so my choice is for Kaspersky