If you own one Hebrew Mikraos Gedolos Chumash, this should be it. The Toras Chaim Chumash, published by Mossad HaRav Kook, contains the classic Mikraos Gedolos commentators, plus much more. All of the commentaries have been checked and corrected by world-renowned Torah scholars based on ancient manuscripts.
The following commentaries are included:
Targum Onkelos Rav Saadia Gaon Rabbeinu Chananel Rashi Rashbam Ibn Ezra Radak Ramban Maharam Ben Rav Boruch M'Rotenburg Chizkuni Sforno Sefer HaChinuch Editor: Rav Mordechai Leib Katzenellenbogen Hardcover, 7 volume set | 8.5" x 11"