Comodo vs others? (Threatfire, Online Armor...)

[Techrat]

I've used Comodo and Avast free for ages now.

I recently came across Threatfire and Online Armor though and I'm thinking of trying them out (the free versions).

Has anyone got experience with these, any recommendations for or against them or other suggestions?

Free, as in doesn't cost money is important.

 

[HavocXphere]

Firewalls are very difficult to evaluate. I'd go with whatever I like best.