I listen to "Dance in the Dark" a lot more than "Bad Romance" it seems so I have to choose that. "Bad Romance" is a contemporary pop classic, but DITD is just such an underrated masterpiece in my opinion.
These are both Gaga's best songs. One is her best, the other is her second best.
Dance In The Dark is better but only by a bit. The intro, the synth riff, the vibe, the chorus, the instrumental, the homage to icons in the bridge >>>
I feel like dance in the dark is the magnum opus of her discography thus far tbh, from a production standpoint and melodically, sonically, and lyrically it's just beautiful
bad romance is a killer pop song but I prefer dance in the dark