A2: too many false positives, very hard to update.
Edwido does not work well for me, again the false positives, interaction with other programs.
SwatIt I never used ::slight_smile:
AntiVir, like you said, does not have any advantages over avast.
NAV: seldom installed properly, never uninstall, processor intensive, unbelivable support.
AVG: not support for free version, only in English, terrible updates. Easy and good with emails. That avast could do better :wink:
System Security Monitor works well to that ones who does not install too many applications for test…

So, we got it! :wink:

I could not say it better 8)