22 rue Caulaincourt, It’s run by a generation baker, who has taken grandfather’s recipes and modernised them. You can always find fabulous experimental breads here, I recently picked up a black bread, with sesame seeds, dyed with squid ink.
Sacha Finkelsztajn in Rue de Rosiers in 4e, La Boutiqute Jaune (yellow store.) "They have divine Gateaux de fromage (Cheesecake- in 4 wonderful flavours), cakes, many jewish breads/ pastries and savouries. It is all gorgeous- not cheap though." http://finkelsztajn.com/