hello
i use it again now with eset and i used it also last year with MSE and also with avira
PF is a good firewall option, if you need something more than window firewall; it has firewall and hips modules.
My opinion on it:
- light on ressources, maybe the lightest one in this category (firewall with hips)
- Easy to use if you understand english and if you read the good pdf guide (on privacyware website).
- Few popups in general if you leave it by default and if you don't have million of unknown programs^^.
- strong firewall in many tests.
- One of the highest compatible firewall with antivirus software, from my experience.
- Bugs free firewall, never encountered any bugs with it.
- Frequent updates; last version update was in january 13
- Good support; they answer you fast.
If you want to try it, don't be surprise at first reboot if you experience few minutes freeze, PF learn your computer; don't touch anything and leave it working. After that all is fast and easy^^
Hope my opinion can help yu^^