Two more chocolatiers opened in the neighborhood, giving competition to Pierre Hérme. Patrick Roger, voted the best chocolatier in 2000, seems to be guided by the seasons and his whimsies, as my daughter Hadley and I saw the largest 6′ chocolate pencils to commemorate the start of the school. Down the street, on rue de Rennes, is another contender, L’Atelier du Chocolat, which looks more homey and provincial, with nuts and praline as well as patisseries. Pierre Hérme, 72, rue Bonaparte, 75006. Patrick Roger, 91 rue de Rennes, 75006. L’Atelier du Chocolat, 89 rue de Rennes.