It's such a tough decision, I can't choose.
I remember raping the replay button for Bad Romance back in 2009 and being totally mesmerized by it for no particular reason. It was what truly solidified Gaga for me and made me the stan I am today.
But We Found Love is magical. The song and the video come together flawlessly to combine a sort-of short film of such tremendous power and meaning.
I honestly can't choose, so I won't.