Daily Dungeons and Fate Grinding for myself, with a dungeon done every 5 levels after learning a new skill so I can apply it much better to my rotations. I'd actually recommend it, I find it scary seeing some people fate grinding straight to 50 but not having the new skills or effectively practicing with it, after all when it comes to Fate grinding as a Dark Knight your just spamming your AOE or Mech spamming your spread shot.