I prefer the unofficial guide. The DW-secrets book was ok. It comes to you in PDF format, so unless you print up the 100+ pages, you only have it available to you in electronic format. The only thing she talks about for serious money savings that I hadn't heard of before was in renting DVC points, where if you do a search online, you will find the websites that she mentions in her book that specialize in DVC rentals. She does stress all the pre-trip planning that should happen before you go, but then again every other guide does that too.