ANSWER:
Ibn Katheer is better as it follows the way of the salaf. Al Qurtubi is also good but it is not the best! It has mistakes in Aqeedah especially in the names and attributes of Allah.
You should choose tafseer Ass’idi, and if not possible, then tafseer Ibn Katheer as this has both weak and authentic hadeeths.
Kindly refer to the following link(s):