"Spanked Bottom" by sle In reference to this thread: http://www.elitetrader.com/vb/showthread.php?s=&threadid=223001&perpage=6&pagenumber=32
I recommend "Trading Long Straddles" by falconview (with additional commentary from forexforex). Careful though, it's 5,000 pages and there's no ending.
I haven't looked through option trading books lately, but here goes: Volatility Trading by Euan Sinclair is very good, but a reader would benefit from having a foundation first. Natenberg's book, while certainly dated, still has some value due to its point-of-view. The theme of the book is understanding the relationship between the strikes and the term structure in a very intuitive way. For some, the book will be too simple. But it's probably a mistake for many people to skip this level.
Since the title of this thread is: "Profitable, professional options traders", I forgot to mention in the last post: Most professional options traders don't learn the skills/trade from a book. They have been taught, either in a specially designed program for new recruits at their firm/bank - or personally, by another individual professional trader. In some cases, both. It just occurred to me, actually - I don't know any professional options traders who learned from a book or collection of books. I'm sure there are some out there, though.
KPS21: Thanks that helps a lot. Any info on finding a mentor? I doubt most are interested in spending their time with that...