Over the years I have bought the ones below: Malwarebytes, Defense, Kaspersky .

In the personal COMPUTER I always add in Malwarebytes , I have found this more effective than any of the solutions above at finding potential issues. Today I actually use a combo of Windows Defender and MalwarebytesThis combine has proven to be pretty effective so significantly and has had no impact on the performance of my computer.

Likewise do not forget that Windows Defense apparently only works with Microsoft mozilla. Therefore if you use others then you had best get either Malwarebytes (paid) or another anti-virus.

From the Past 3 Years i have been using Kaspersky Internet Protection to guard my computer system. This specific Antivirus Software is very very best at guarding the whole systems from viruses, malwares, trojans.