L'Arpege, a Passard restaurant, has a 140 euro lunch menu that's very vegetarian. I had the vegetarian menu quite a few years ago and many dishes had an Asian theme. I found that menu a little hit or miss. The vegetarian sushi is still the best melt in your mouth sushi I've ever had. Other dishes reminded me of Asian dishes but tasted a little off.
I went to Meurice after Ducasse took it over. Place is beautiful and food is good but I'm not in a rush to go back. Here are some pics from the Paris restaurant thread.
Best bang for the buck (places I would return):
Traditional French : Le Comptoir du Relais (casual ambiance) vs Spring (formal ambiance).
Inventive French : David Toutain
Thanks for the bang for the buck places, I'll definitely look through the paris restaurants thread.
Knowing nothing about your tastes, who you're going with, etc., I'd say Savoy. The new location looks amazing, and the chances of disappointment are much lower than somewhere like Arpege. IIRC you also get to order off the full menu.
In any of those places, unless you have amazing self control, prepare to pay a bit more than the menu price. Champagne? Sure why not? Coffee? Of course. . . . You get the idea.
I'd consider Le Cinq also (Le Squer is the best IMO), but check what they're serving on the lunch deal first.
Yeah, the fact Arpege is vegetarian-focused could be a bit hit or miss for my tastes. I think one higher-end place and the rest would be classic french bistro or just cured meats, bread, wine at the AirBnB for a few meals.