Time Out says
As one of the two viable banh mi options with SGV prices available in Chinatown, Buu Dien is a great reason to curtail your treak eastward. But unlike Banh Mi My Dung, Buu Dien has plenty of sitting room and a bigger menu of Vietnamese dishes, namely pho. Consider their chicken liver pâté, funky in all the right ways and taking the mere sandwich, with its more-than-decent baguette, pickled vegetables and meats, to another level. Everything you never thought possible with two dollars and fifty cents.