I really liked the Beach Club, I wouldnt say it has the best pool, but it is very good. Wilderness Lodge had a very good pool. The boardwalk is a huge plus and being close to Epcot and MGM is even bigger for the Beach Club. I have not stayed in all hotels in Disney so cant say for sure, but Wilderness Lodge is the best I have stayed in so far.. but then Animal Kingdom when I go this month might beat that, however I find it hard to think it could.
I do think its worth it, however when you compare the price of the Deluxe Resorts, sometimes you have to say, I could save £3,000 if I stay at another Deluxe Resort and I could use that money to buy loads of other things that will make the holiday really cool. Of course if money not an issue then dont base it on that.