By far one of my favorite places in the greater Phoenix area. The food is cheap but very good. The staff has always been friendly whenever I have visited and have never batted an eye whenever I have asked for more salsa (I always do).
The spicy burro is very good and you can actually taste the flavor of the meat which was a nice surprise as it seems most places tend to hide low grade meat with overly flavored sauces. As mentioned in other posts, the tacos are small but that isnt such a bad thing. It gives you the chance to try a lot of different kinds.
Even if you dont live in the area, this little place is worth the drive. The only issues are that its not very easy to find and parking can be in short supply if its busy.