between norton and avira,
its definitely avira FOR ME,
based on nothing but my opinion
avira is less annoying and easier to handle and simply seems to be more effective.
looking the free-version as well as the prem-version (had both free and prem, exchanged the firewall though, too strong )
and norton seems to cause a lot more troubles
which however even beats avira premium by miles, is nod32.
I am 100% satisfied.
more and faster updates, more useful and better looking features (for me), even easier to configure, somewhat slim,
WAY less false positives (looking at both programs set to medium detection rate)