Sygate

I've recently been having some trouble with my sygate firewall (http://forums.majorgeeks.com/showthread.php?t=47239.) Ever since I upgraded from sygate personal firewall 5.5 to 5.6. I'm thinking about uninstalling it and just redownloading 5.5; however, I was wondering if there are anyother really good firewalls out there. Sygate is the only one i've really heard of (besides zone alarm but I saw that in action and it didn't look to good.) Sygate has actually helped me solve some major problems with my interent connecting and I really like its easy to use interface. Anybody have some other recommendations?