Thanks for all the recommendations. Here's the lowdown:
Great restaurant: La Regalade - even the plain baked endive was impossibly rich and smooth. Everything was good. The chicken cream soup was unreal. The desserts, except for the souffle, were good not great - but the souffles were magnifique!
Very good restaurant-Chez Maitre Paul, Get the famous chicken in wine cream sauce - incredibly rich and yet fabulous. Don't let the owner steer you clear of the local wine - it is strong, but you need it when paired with the heavy, heavy food. I normally don't like too creamy French food, but this was wonderful.
Bofinger - you must sit in the main room. Concentrate on the seafood platters and enjoy being a tourist.
La Table de Fes: an unheralded cous cous place near Raspail and Montparnasse - no tourists, great cous cous.
Another tourist delight is Le Train Bleu, magnificent decor, go in late afternoon for drinks in the main room.
Fab foie gras to buy - La Comptesse du Barry - much better selection than any other food place we went to. Bought some to eat in the hotel, and also as gifts.
Bonne Marche - buy great mustards, sea salts, jams and other fun foods for gifts or souvenirs. Not the foie gras though.
Disappointing: L'arbuci - mediocre oysters
Laduree - Years ago, I loved Laduree. Went to the Left Bank branch and it was overpriced and very disappointing. Really gone downhill for breakfast. Macaroons still great.
Disappointed: couldn't go to L'os de Moelle because of scheduling problems.