I'm coming down to DC on Tuesday to see "Pericles" and need a restaurant recommendation for dinner in the neighborhood (450 7th Street NW). There will be four of us, and we're looking for something moderately priced. We eat just about anything, but one of us is definitely on a budget so we need to keep the price lowish. I don't know much about DC. Any recommendations for casual dining in that neighborhood would be greatly appreciated.