Well, I guess, unlike everyone else here, I can put my actual field Micro Theory. Though I do some experiments as well.
Mine will be my field, so not everyone for long.
Ha ooooh this was funny to stumble upon. After having completed that my preferences are pretty different. I ultimately finished my education on a labor econ note after focusing mainly on general macro. My favorites now are probably labor, development, international, and behavioral. I hate Econometrics, law, and finance.
EDIT: Ah yes, and I completely agree about economic history.
Those are all very good subtopics... but I would go with economic history and behavioral economics. Maybe Econometrics, too.