Will throw my opinion into the arena, for what they are worth.
L'OPERA for the large brown loaf 180 baht , (but large enough to cut in half and stick one half in the freezer).
The white bread is good too. The best patisserie in town, since the Devra Dervri shut down. They also do a small sour dough bread as well that is very good. L'Opera also produces a Brioche loaf but only on a Sunday.
The Chouqette French sticks: I find the crusts a bit tough, and before you ask Yes, I still have most of my own teeth intact. I find their Patisserie quite good. The coffee is also good. I have been in the shop when some very large loaves have been baked, and the bread is purchased by weight rather than per item.
French stick, MAKRO, I know, one would not believe it but its true imho. A French lad put me onto it and I must say, he was right.
Back to Sausage King.... I find there is something missing from their bread, maybe needs a bit more salt.
I do often purchase from Nana Bakery, as there are now 3 in fairly close proximity to my house in the Sansai region. There are sliced Brown and white loaves that are handy. I also buy the unsliced white along with the Bread that has rosemary through it. This is very nice when toasted. They also occasionally produce a sultana loaf which ig reat toasted and buttered.
Another Baked goods shop that comes to mind is to be found on the bottom floor in Central Festival shopping centre, Saint Etoile, almost next door to TOPS supermarket. They do a current bread loaf that will kick start the sugar spike, also various breads, that they will slice for you if you so desire. They also make very good bread buns/rolls, wholemeal, multigrain etc. This is part of the Yamigazi (?) outfit, and has a sister shop at Central airport plaza.
My Preference would be to visit L'Opera for bread/patisserie purchases, but as is an hour round trip then it can run expensive, so I defer to Nana bakery at the moment.
I hope this helps