I have a couple questions. Is Paladin the class you want to continue with for the future? If so, you might want to consider crafting a class specific epic, like Lay on Hands, as it could really give you the boost you need to pass rank 20 by.
In general, Faceless Manipulator fits well into more control-oriented decks where you can duplicate your high-value minions and if playing another control deck, duplicate their high-value minions. On the other hand, Enhance-o Mechano fits into aggressive decks where you flood the board. So I'd pick whichever style you favor more in that regard. However, it seems like you are going for neutral epics that can be played in any deck, so I also wonder whether you have Big Game Hunter yet?, because it fits that category and I find it to be better than both the options you have proposed. Hope this helps.
What Ariel4 said. Enhance-o-Mechano is good is you can flood the board with a lot of minions early on. So it favors aggro-style decks. Faceless Manipulator favors control style decks which look at winning the long game. But the thing about Paladin is that its biggest strengths do not lie in the early game or late game, but mid-game. So personnally I would look at crafting Quartermaster, Lay on Hands, maybe even Sword of Justice.
Rollback Post to RevisionRollBack
"Everything will be alright in the end. If it's not alright, then it's not the end."