I think Outpost is gr8, though ZA isnt bad at all. Currently, I am using Outpost Pro 3.51, and i find it superb It takes a bit of knowledge to craete custom rules for the firewall, but thats not a Herculean Task. also, Outpost provides a better UI than the YELLOW UI of ZA. Also, its not much on the firewall, but more on the user as to how he configures it....thats what i feel