Problem quality and variety
YES. Cengage is the gold standard. It is better than any single book for building the "problem-solving muscle" required for Advanced. Use it as your primary text. cengage maths for jee mains and advanced better
Problems range from basic conceptual questions to Olympiad-level challenges. 3. Integrated Exam Resources Cengage A to Z JEE Mains & Advanced - Maths Vol 1 and 2 Problem quality and variety YES
Small exercise sets follow each sub-topic to ensure students master one concept before moving to the next. 2. Comprehensive Practice Modules cengage maths for jee mains and advanced better
Cengage is the "better" book for building a rank-winning brain for JEE Advanced. But it is not the "better" book for passing JEE Mains quickly. Choose your weapon based on your target.