"Maybe I want to be a hooligan!!"
I haven't seen a ton of Pre-Code movies, but man, when Ernst was Pre-Code, he really was Pre-Code. Surprising in a lot of ways, but also really funny. Lags a bit in the last act, which I think is a bit intentional to contrast Plunkett's boring idea of life with George and Tom's hooliganism.
I've now seen Trouble in Paradise, The Shop Around the Corner, and this out of Lubitsch's films. So far I think Trouble in Paradise is my favorite, followed by The Shop Around the Corner, then this, but they're all really great movies.