The Zohar with main commentaries by Rabbi Avraham Azulai (Ohr HaChama), Rabbi Eliezer Tzvi of Komarno (Damesek Eliezer), Rabbi Yitzchak Luria, The Gaon of Vilna (Yahel Ohr) and Rabbi Shalom Buzaglo (Mikdash Melech).
A classic commentary on the Zohar by Rabbi Moshe Cordovero (1522-1570), who was the head of the Tzefat school of Kabbalah before the Ari. (Please check sample pages)