I've used Birnbaums, Passporter, WDW with Kids, Everything You Wanted to Know About WDW, and the Unofficial Guide to WDW. In my opinion, the Unofficial Guide is the very best. Most of the other books love Disney a little too much, looking at WDW features only in the most positive light. That's okay, but I'd rather have both sides of the story! I think the Unofficial Guide gives the most objective perspective of any of the books I mentioned. It's also humorous and prints parts of many letters that are not especially complementary of the Unofficial Guide itself! I have to agree with robinb, however. Especially after 9/11, this board and others like it are the best place to get the very latest information.