You can only decide what is best AV for your specific system after installing it and using it for a while. The AV test lab performance results do not apply to every single system in existence; it only applies to the specific systems they used to test the performance of the AV under the test conditions they used.
Protection wise, they use default settings. So the results are generally not an indicator of an
AV's maximum protections.
As a general guideline though, the protection scores are accurate for the sample set and test conditions. AV-Comparatives generally uses a slightly outdated browser and other
softs to see if system is compromised.
It irks me to no end that AV impact on system is never what I see on my specific system almost all
AVs. There is almost never agreement with the AV test lab performance results. Protection is a much more tricky item that depends upon too many variables.
The best way to select an AV in order of importance:
- Does it function well on your specific system; cause slow boot, conflict, break softs ?
- Can you figure out how to use it ?
- Does it offer reasonably good base-line protection according to labs and other users ?