This may just be piling on at this point, but I have a slight preference for Mega. I stay north of town and always rent a car, so distance doesn’t mean much. Mega looks nicer, has better lighting, etc., which, admittedly, doesn’t make the food any better. Mega does have a more interesting beer collection, at least for those of us who like craft(ish) beers. I also like the bakery better, although they no longer seem to have my favorite bread, the whole loaf pan integral. Sometimes Mega is out of avocados, or the cilantro looks crappy, or something, and I make a second stop at Chedraui. Chedraui’s produce might actually be a little better. If I were staying right across the street, I don’t think I would go out of my way for one or the other.