What are some good operas to see?

Ok, so I really love operas and Ive been wondering which ones you guys like so maybe I can see them in the future. I see like one a month. So far I've seen Simon Baccongera, Hamlet, Boris Godunov (ik very long), L'Eliser D'Amore, Carmen, La Traviata, and Don Pasquale. and I might see Regoletto in April. (I see all of them at the Met)