Depends on what part of Mexico your in. Seriously, if you like Mexican cuisine, that book is awesome.
I'd say we have some pretty decent Tex-Mex places in town, though.
Oh it's a book. I didn't know if you meant restaurant, grocery store or what.
Tequila's - the best. Slightly below average by Dallas standards.
Cinco De Mayo - decent
Fernando's - OK
Everything else sucks.
El Portrillo is horse ****. It's not just not good. It is terrible. And it is probably the most popular one out here. It's not Mexican. It's not Tex Mex. It is authentic Mississippi Mexican, which is bad.