Impossible. I love both these albums beyond measure, but I choose Pop. I mean, Discotheque, Mofo, Do You Feel Loved, Staring at the Sun, Gone, Please, Wake Up Dead Man. But I mean, Zooropa has the title track, Numb, Daddy's Gonna Pay For Your Crashed Car, Lemon & The Wanderer. I feel like (at least at this moment) the tracks on Pop that I love, I may love a little bit more than those on Zooropa. Nonetheless, I love both and I need both.