Graduate students preparing for comprehensive exams in quantum mechanics (QM) are advised to consider Zettili's book for its advanced rigor and extensive solved problems, which are beneficial for practice. While some participants express dissatisfaction with Griffiths' book, citing its lack of formalism and clarity, others defend it as a useful resource for undergraduate studies. The discussion highlights a preference for Zettili among those who have struggled with Griffiths, emphasizing its effectiveness in building a solid understanding of QM concepts. Additionally, Schaum's outline is mentioned as a potential supplementary resource, although concerns about its quality are raised. Overall, Zettili is recommended as the primary text for those needing to grasp advanced undergraduate QM within a limited timeframe.