content: By a friend's recommendation, I bought "what to expect when you are expecting". As she said, this is a "pregnancy bible". But I actually like this book -- "planning your pregnancy and birth" much better.This book is clear, well-organized, and practical. I have a busy schedule. Also my reading speed is fairly slow since English is not my native language. So I appreciate the conciseness and yet still completeness of "planning ...". On the other hand, "What to expect ..." book has 130 more pages with smaller prints. It's also hard for me to find related topics in "what to expect" book, which according to my very personal opinion, has too much information and has too much useless talk.