YOU SAID:
I don't know if I want pizza or tacos
INTO JAPANESE
ピザとタコスのどちらがいいのかわからない
BACK INTO ENGLISH
I don't know which is better, pizza or tacos
INTO JAPANESE
ピザとタコスのどちらがいいかわかりません
BACK INTO ENGLISH
I don't know which is better, pizza or tacos
That didn't even make that much sense in English.