Yes, HC Verma is the best book for JEE Advanced Because It has everything which You should learn to solve Problems of JEE Advanced, The questions are unique rather than Like most of the books which have the same type of questions on the same concepts. Concepts are explained in very practical Approach and Many people find book helpful so Just if You remain limited to HCV then also You can score GOOD provided that You solve each and every question of It with understanding the concept behind the Problems.