I read both. Short books but to the point. Someone (TJ) years ago when I first joined here turned me on to them. I found these much better than Mars/Venus.
It's amazing how much common sense (to us men) is in FMO, but yet is news to all the women I passed this book onto.
In fact, if any women read FWO, I'd love to get a "review" to see how accurate (in your opinion) the author is.