It's okay in a pinch. Their Meal Deal is a really good value. I could be imagining things, but it seems like their food used to be heartier. We have Taco Johns here in the Midwest which pretty well owns Taco Bell. When I lived out west there was a place called Taco Time which I liked more than Taco Bell.
it pales in comparison to the real thing http://www.urbanspoon.com/r/6/86416/restaurant/Mission/La-Taqueria-San-Francisco
just came to give my endorsement of the cool ranch tacos, as long as their supreme. without the sour creme, their gross like any other taco but with the sour creme and cool ranch seasoning. they are epic.