I have heard similar praise of Bernard Pacaud's cooking at L'Ambroisie. For some reason I have problems with spending 200 Euro plus per person for a vegetarian meal -- while I am sure Alain Passard is a genius with the veggies.... I can't help but want meat for 200 Euro plus....
One problem is that Guy Savoy, L'Ambroisie, L'Arpege, and Plaza Athenee (Ducasse) are terribly expensive restaurants. Last I checked I do not think they offer sub-100 Euro lunch menu's like Taillevent, Les Ambassadeurs, Hiramatsu, and Le Cinq do..... oh, how can I forget, Le Bristol Restaurant is also quite excellent too....
Outside of Paris I enjoyed Le Moulin de Mougins, just outside of Cannes -- my sister and I spent Canada Day (July 1) there one year and it was just so lovely, likely my 2nd most favourite restaurant in the world. Le Louis XV in Monaco was outstanding too, sitting on the terrace with a private view on to the Place du Casino......
Still remaining, Auberge de L'ill in Illhausern; Troisgros in Roanne; Le Pyramide in Vienne; plus a handful of others......