You are looking for a perfect biography, that does not exist, not even auto-biographies, those tend to be the worst. But let's compare the Einstein biography

You are looking for a perfect biography, that does not exist, not even auto-biographies, those tend to be the worst. But let's compare the Einstein biography written by Pais: He had a PhD in physics, also a degree in mathematics, personally knew Einstein, personally knew most of the greatest physicists of the 20th century. Worked at the IAS in Princeton, published a lot in Quantum Physics,had several contributions to the theory, was a tenured professor, wrote several excellent books in the history of physics. Now imagine a book on Einstein which starts "Dont worry if you dont know who Albert Einstein was, I didnt know either five years ago"