Which is a better Firewall?

Outpost free addition or Comodo free addition? I am currently using the Avast A/V, Malwarebytes, Spyware Blaster and CCleaner. I want one with good protection, but it also needs to user friendly. I am pretty decent with computers but I am definitely not FBI material, lol. This firewall will be used on a family computer and aside from myself my family just knows the basics. I need a firewall that they will be able to use and understand when I leave this summer. So which one has good protection and is easier to use?