I would say that Sword of Justice's advantage is less the Shield of Faith, as that can be easily replaced, but +1 to damage and attack rolls. So if you struggle hitting enemies, +1 should contribute to your chances to hit. Everburn may do more demage.

Considering I tend to be more likely then not to hit enemies I would go with Everburn.I think you will get more milage over potential extra 3 points of fire damange then +1 making a difference between hit and miss.