I've been to Someburros a few times now - it's all been takeout so I can't speak to the service but I absolutely enjoy the food.
They have a big menu with tons of a la carte choices, I've had the bean tostada, cheese enchilada, nachos, guacamole, chips and salsa - these have been consistently tasty. The beef potato taco was good but a little greasy (it's the kind of taco that is stuffed and then lightly fried in a pan), the shredded beef taco came with a soft corn tortilla - it was a little bland and the meat was too dry.
What bumps this from a three to four star is the huge menu and extremely cheap prices. They also offer a variety of interesting sides/extras in different sizes. The food is fresh too, no soggy lettuce or mealy tomatoes here. Above average Mexican fast food.