I'd like to add that I think that the UG is well worth every penny. One of the things that I really like is that he includes comments from readers (both pro and con) for many things. It really helps me decide whether or not I want to do a particular activity. The comments usually mentioned why they did or did not like something.
I have at one time or another bought every single guide that there is to DW. The only two that I buy now (and I buy them every year) is the UG and the Passporter. Between the two of them I have everything I could possibly need to know.