Sorry! I'm not leading tours of the eating establishments that are our personal favorites, to strangers on the internet. You need to spend a year or two down here exploring the less expensive restaurants on your own. Then you'll figure it out and find a huge number of great places that you like a lot. (Hint: avoid chain restaurants or restaurants that haven't been in business for at least 5 years, like the plague). You'll get to know the chefs and wait staff, and they will treat you like family.
One way to tell a tourist for sure, is that he/she will say something like "Where is the best place in New Orleans to eat (fill in the blank)?" Or, they eat at one place because some clueless person told them to, and declare it has the best roast beef po'boys or shrimp etouffee or whatever, in town.
The big secret is that New Orleans is FULL of great restaurants and there really isn't any cool secret restaurant at which everyone should eat.