Board Thread:Game Discussion/@comment-70.184.219.36-20131011204320/@comment-24003266-20131012163039

+ version of Infernal Lord is debatedly the best of the Bigger Four armors; +Dark Prince's is pretty good compared to similar legendaries (e.g., Aegis of the Fallen). Armor of the Bear is good in arena, but you probably don't need both that and Wicked Wraith, and Swampstone is decent, plus versions are way better though. Your other 4* and 3* are fusion fodder if you dare, otherwise they are worth 90EP each when enhancing, 2* are worth 50EP. Fusion is mostly luck so beware; however, it's one of few options of getting better armors too, especially if you don't spend for gems. It's all complete chance...

Good luck!