I've had some success sending my toughest audience, His Druckerness to places in every exploding Roswell environs. A favorite of both of us is Tortugas Cuban Grill
http://www.tortugascubangrill.comPretty much love everything, though I will say my fave Cuban sammich is Mojito's in downtown Norcross. Do not confuse with an unrelated (but also good) place in Johns Creek with a similar name. Have not explored Mojito's from top to bottom yet, but really digging Tortugas near Holcolmb Bridge Road/Jimmy Carter Blvd split.