Determining the best study material for the CPA (Certified Public Accountant) exam depends on individual learning preferences, but certain resources are widely acclaimed. Becker CPA Review is a popular choice, offering comprehensive video lectures, practice questions, and simulations. Wiley CPAexcel provides adaptive learning technology and a vast question bank. Roger CPA Review is praised for its engaging teaching style and mnemonic techniques. Gleim CPA Review is known for its extensive test bank and detailed explanations. NINJA CPA Review is appreciated for its affordability and concise study materials. Ultimately, the best study material is one that aligns with the candidate's learning style, time constraints, and exam needs.