At this point, Dal Negro, Fournier, Angel, Cartamundi (Copag), and Piatnik are the only card manufacturers left that offer a consistent product that doesn't have any kind of major issues. Off the top of my head, this is a quick summary of issues I know of:
Kem: Well documented issues with bowing and warping
Faded Spade: Same as Kem, plus a bad record of customer service.
Modiano: Abhorrent customer service and well documented quality control issues.
King: Majority of bridge jumbo decks were warped with a group buy run a couple of years ago. Decks were offered to be replaced.
Am I missing any?