I happened upon Dos Amigos my accident trying to find a place to have lunch one day, and I was rewarded with authentic, delicious, Mexican food that I will gladly make a trip to the valley for.
My boyfriend had a beef chimichanga with rice and beans, and since I didn't see chorizo burritos on the menu, I asked if it was available, and it was. I specifically requested chorizo with egg and cheese which is usually a breakfast burrito, but it was absolutely amazing. They make the chorizo on site, and it is the closest thing I've tasted to Mexico.
The prices were reasonable and the horchata was amazing....there's nothing better on earth than a chorizo burrito with horchata to drink. Take the time to stop in when you're in the valley in the afternoon when it's a little slow, you won't regret it.
Pros: Quaint building, great service, and amazing food
Cons: The place could use some replacement tiles and paint