Been using ESET for 10 years now.
Great detection engine.
Does exactly what you need it for.
10 years without having any issues with their software.
Doesn't bother you with annoying popups.
Rarely gives a false positive.
Doesn't use much resources.
Doesn't slow down your system (looking at you Norton and McAfee)
Doesn't destroy Windows (Looking at you Norton, McAfee, AVG)