I prefer Comodo firewall.
It's MUCH more secure then both the free AND paid versions of ZoneAlarm:
http://www.matousec.com/projects/wi...ysis/leak-tests-results.php#firewalls-ratings
In fact, the Free version of Zonealarm has a "Very Poor" rating.
I used to use Jetico as well, but you're right... it's too hard to configure.
You can try the Comodo Firewall, it is good....but slightly irritating. But best of all free