Came here to say these two things.

Dolores park is my trump card for showing off SF to (20 something) out of towners. There's usually nothing even remotely like it (when it gets crowded and boozy) wherever they came from.

And I'm in it for the al pastor and so far El Farolito has my favorite. I love Guadalajara too though, because you can get a burrito that's just two different (huge) portions of meat, and they also have some very spicy and delicious salsa. I've strained friendships arguing whether Cancun or El Farolito was better though.

To my taste, the best burrito in SF can be found at La Corneta in Glen Park. I lean toward the super carne asada, but the fish (salmon) burrito is also amazing. The Glen Park La Corneta has amazing food in general and if you go there, you will not be disappointed.

Be advised that La Corneta also has a location in SoMa (on Mission) but the taste of the food is entirely different, not bad, but not as much to my liking.

El Farolito for the torta. Cancun for the burrito!