As a Mexican myself I can recommend LEON, sometimes found with pacifico or montejo, its very similar to Indio but with a bolder taste.
Tecate its my personal fav. highly recommended , also if you can try XX amber a more serious taste than XX regular
There's a Seasonal beer called nochebuena (poinsettia) only available around xmas. if you can find it buy a case. It has the perfect taste for a cold winter.
Stay away from Corona and Estrella (specially from Estrella, tastes like a weak corona)
+1 Nochebuena is gooood.
I've never tried Leon, all those brands from the Pacific shore are just arriving Monterrey city...damn! I'll have to buy some Leon tomorrow
Stick with Negra Modelo, it is basically the best. Dos Equis Amber is also good, but definitely second to Negra Modelo. Pacifico is just as bad as Corona, but you feel less guilty drinking it. I loved Pacifico in high school, but realized a few years later it was awful. Also Dos Equis Lager is pretty weak, but refreshing. Maybe a slight step above Pacifico.
I think I was ok with Tecate, but I haven't had it in years.
Right now I am drinking Dogfish Head 90 Minute Imperial IPA. This kind of beer is in a different world than the Mexican beers mentioned above. Pure bliss.