I've been a regular at Le Madeleine for years now-it's my pre-theater spot. I've always enjoyed the food and the atmosphere...solid, good value.
That said...3 generations? I don't know the top age, but-If you are going pre-theater, it is quite loud and the tables are close together-the garden room is a bit quieter, but still loud.
In my view, the food at Rene Pujol is better than Le Madeleine's, and the ambiance is nicer. As far prices go, even if Rene Pujol would cost more, I think it's worth it. However, you may have certain budgetary constraints, so the best thing to do is to check the prices on their websites and compare.