Corki Double Edged Sword Dilemma
I like to play Corki mid with Thunderlords and I'm struggling with the masteries. Corki has decent poke and tends to be fairly safe so (especially after the nerfs), I've been looking to get some extra damage. With Secret Stash + Corrupting Potion and Vampirism, I can generally out sustain my opponents anyway and I expect to be a bigger lane bully with DES. Is it worth taking DES over Feast or Expose Weakness and have any of you experimented with it?
BTW: I've been having a hard time deciding between Dblade and Corrupting Potion too. I don't know which lets me be a bigger nuisance since it's so different. Dblade gives more damage but I end-up running OOM faster and can't win by outsustaining as much.