Where's the best? GreaterLA & OC?
I tried it at the Krazy Taco roach coach on Valley blvd in Industry. To me this truck appears very sus, And I don't mind c ratings. But it still tasted good. Almost like a pulled pork sandwich dipped in a spicy, savory, slightly tart red broth. I mean SOAKED. It had a few pinto frijoles on it: Nice touch.
BTW there's a branch of El Taco Nazo right across the street. They deserve a hug for the beautiful whole chile peppers they serve HOT OFF THE GRILL with every taco. The branch in El Monte grills up a whole mess of them and puts them out to cool. This is the place to go when you're hungry on the 605. Just barely East of fwy on Valley.
IF you get off the freeway at night here and keep going East you'll pass a few Roach Coaches that do Tacos Al Pastor ON A SPIT!