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