La Quebrada is a great choice for traditional Mexican in the western suburbs, as I'm sure you've read in the
La Quebrada thread. Since you're in Naperly Hills, I'd recommend La Quebrada Express as it's a little bit closer, and as far as I can tell the food is the same as the one by the casino.
If you're looking for something a little bit more modern, I'd go to
Bien Trucha in Geneva. It has great atmosphere and serves more nuevo-Mexican fare. I don't think they're set up to serve a lot of people at once, but if your family is around 4 people, it should be fine.
I would have also recommended Adobo Grill in Oakbrook as another modern-y choice, but alas, it has closed. That's a shame, because their brunches were really good.
Stickin' together is what good waffles do!