When coming or living Paris, no matter how posh it sounds, you have to go at least once at La Durée. It is a sort initiation. But even if it is very good, you need to pick the right spot. For an extremely luxurious feeling, I would recommend the one from the hotel Regina next to Les Tuilleries. Please do order the Saint-Honoré framboise et rose if you feel like taking something else then the macarons which are their specialty.
2 Place des Pyramides 75001 Paris