Alberto's is good. We really enjoying hitting many of the hole-in-the-wall type taquerias. Sometime's my Fiancee and I will just drive around, find any interesting looking place and pop in for what ever is their specialty. This method doesn't just apply to Mexican restaurants but other types of food as well. Of course, sometimes we've had to leave after taking a look at the interior ......... ugghhhh........ a particular Vietnamese resturant comes to mind

..........scary!
Let's see ...... Mexican restaurants ........ these are all local establishments and after a couple of visits we've found what there specialty is. There's a reason they stay in our weekly rotation

Gecko Grill (diablo shrimp, and good mole, tell Tina David (Damiana supplier) sent you)
Casa Vicki's (roasted chicken with fresh homemade tortillas, beans, rice

)
El Pirin (camarone's cocktail to die for !!! and still the best salsa we've found)
Trini's #4 (chicken machaca)
Super Taqueria (can't go wrong with anything on the menu at this popular place)
Baja Cactus? (I think that what it's called, Main St., Milpitas. Killer mole)
Buritto Factory (new veggie burrito, chile verde, regular chicken burrito mojado)
Royal Taco (they closed our favorite location but still operate in Milpitas)
Salvadorian at Capital and McKee, in the old donut shop

(pupus, I think that's what they call them)
That's just a few off the top of my head. Again, nothing fancy but good eats and we've become friends, or at least familiar faces, with many of these establishments.