Non con, hands down, there is no competition at all. Give me non con in any setting, any pairing and I'll eat it up like the dead dove that it is. As for writing, I love omegaverse, it just writes itself, like ya know, make them go crazy and then blame it on their instincts (..okay so that just wrote itself.. i did not want to sound too non con obsessed and went with the second fav trope omegaverse for the writing part and was like, who am i trying to convince here, I'm a whore for non con - reading and writing) So yeah, non con.