They have _the_ best bread of any bahn mi I've ever had. I'm far from an authority, of course... But, my wife is Chinese-American and both of her parents grew up in Vietnam, later fleeing to the US with their families right after the war.
My mother-in-law still eats and cooks primarily Vietnamese, vacations to Vietnam almost every year, and their Westminster location is the _only_ place I've ever seen her get bahn mi. Not to mention it's a 24/7 spot and they're like $2.50 a piece. I stop by there just about every time I'm driving between LA and OC.
That particular bakery actually produces bread for the che cali restaurant in the same parking lot as well as their own store front. Living near by I quickly learned their bakeries schedule and would make a point of visiting just around the time the bread had finished cooling in the rack behind the register. I always thought they should light up a sign à la krispy kreme, but figured most local folks had figured it out like myself. 3 for $5, take that subway.
http://www.sfgate.com/restaurants/article/Old-Taco-Bell-site...