I have ZoneLabs as my Firewall.
I feel that AVG will be knocked out by Nod32.
I think Ad-Aware is unnecessary in the light of SpySweeper.
Window Washer... I've seen it, but I've never known what it was...
OutPost Pro 2 was a firewall candidate of mine, but it wasn't well-known... is it as intrusive on your work as Zonelabs is?