I also use OSS Pro, (I am really
glad I got their deal 2 years ago - lifetime updates for 3 computers
), so no need for me to be installing the free version at home.
But as I visit the relatives whose computers I'm the defacto technician on, then the strange mixes of ZA, Avast!, Avira and AVG will quietly be replaced - it will be so much easier
when they ring up and ask a question about, "Got this requester from Outpost, what does it mean?"
Rather than, "Got this requester from [ZA|Avast!|AVG|<insert other firewall/anti-something>], what does it mean?" or "How do I do <insert operation> in ZA?"