Recommend a good free firewall to switch to?

I am currently using Kerio free, but I'd like to switch, from the list I've found SecurePoint personal firewall which looks interesting, anyone use it? How good is it?

 

I dont know how secure "SecurePoint" is,... there is a good manual included.

 

I trialled Securepoint last month, now (briefly) trying another for comparison.
Found it to be well documented, nice interface, and will almost certainly adopt it.
Some of its german text is a bit quirky, but that is a minor problem.
Although I had some conflicts - made a couple of things start slower - I felt very comfortable with this firewall.
I'm a fan.

 

If I am about to try new firewall I will try CORE FORCE. It is a free project and it looks very interesting.

 

I even haven't heard it

See my signature >>> Windowd Firewall , excellent IMO