I'm doing some research for Mother's Day - but, this could also apply to any Sunday.
I haven't been to either, but both Four Seasons and St. Regis seem highly regarded and are my short list.
I'm also open to any other suggestions.
Last year, we went to Scarpetta. Mom loved it, as did I, however, I've been subsequently, and am not eager to return (with the exception of the heavenly polenta/poached egg dish).