Thanks to all of those who replied. Turns out, I went off the board and ended up taking the group to Platiyo, the Adobo Grill-ish Mexican concept by the Mia Francesca folks.
That description might not sound too appealing, so let me be clear: it was very, very good. The masa stuff, sopes and tortillas were especially excellent. The tortillas led to very good chilaquiles. All of it was washed down with probably the best 3 buck margaritas (a Sunday special) in town. Veracruz style ceviche was excellent. We ate out back on the patio -- a very pleasant place to be yesterday in the shade of mulberry trees on cool tiles with gurgling fountains on either end of the space. Service was very solid. I'm not ready to say that the kitchen is up to Topo/Chilpancingo standards, but it is certainly in the same neighborhood as some other very good "fancier" Mexican places. The brunch menu has some nice choices and is a real bargain.
I'm glad this is where we ended up, since it is not the kind of place I would normally seek out, particularly given the mob scene that usually maintains at Mia Francesca and Platiyo. I'm more of an Islas Marias guy. But on a sleepy Sunday afternoon, Platiyo was perfect.
PS, I have been trying to get to the Nicoise/Ligurian place next door, Socca, for some time. It was not open when we needed it to be for the brunch, but it does seem promising particularly for the neighborhood.