Level 24
Content Creator
Seeing as you're already using Bitdefender as your real-time protection solution I see little reason to use EEK. I'd keep both Zemana and NPE on hand for a rainy day.


Level 61
They have different perspectives when it comes on detection capabilities but I highly recommend to keep them all for second opinion since it's not bad for scanning the system though.

Norton Power Eraser - aggressive on most sophisticated threats and mainly focus on the detection that causes nearly unstable on the system.

EEK and Zemana AM - both can detect in such widely range of threats considering the incorporated engines on corresponding products hence more chances of results to be shown.