As a veteran WDW visitor and a recent, first-time DL visitor. I say...MK! Yes, the parks are similar, but they are really very different. And, I say, there is nothing like seeing the magnificient Cinderella castle! While the general layout and attractions are similar, if you are a true Disney fan, you'll love the differences of the MK! Just my thoughts....if you are looking for a different, more adult visit, EPCOT is the place to go!