Blanco is totally adequate for Tex-Mex.
I didn't want a full dinner, so I ate at the bar and really enjoyed their house margarita ($8.50) - you can really taste the fresh lime and it was a decent size. Definitely one of the better margaritas I've had. I also liked their house salsa - just a bit of heat, a great consistency and very fresh tasting.
To nibble on, I ordered queso fundido which I didn't really care for. They add chorizo, but the sausage really needed to be drained off as it left a TON of oil which was pretty gross. (Yes, I do realize the irony of someone who decided to eat melted cheese for dinner complaining about oil...) There were also way, way too many sweet peppers in there for me personally - those weren't listed on the menu BTW.
I also had a small guac and loved it - clearly fresh made, and full of big avocado chunks. I probably should have ordered this alone. Service was pleasant and the prices are reasonable. If you're looking for tasty Mexican in a nice atmosphere, Blanco is a good option.