Ultimately, I'm glad I read this book, and I'd recommend it to anyone who wanted to have more complete understanding of objectivism. The last chapter, where Branden writes a critical retrospective, was a necessary, redeeming chapter.
Overall, this book was tedious to get through. I can certainly make an allowances that these were audio lectures, not written book chapters, but it still makes for some uninteresting reading at times. I would also note that this book contains a master class of sorts, not merely a distilled synthesis of objectivism. So, for me, there was much more detail than I probably really needed. But the really tedious aspect was the severity of Rand's black-and-white views. It all felt so insurmountable, and Branden acknowledges as much in his closing addendum.