It depends on what you like in a resort. PO is a beautiful and fun resort with a great restaurant and food court. Dolphin has access to loads of different restaurants and acouple of pools, and walking or boat access to Epcot and MGM. To me, PO is more unique. From what I've seen, dolp[hin looks more like a luxury hotel you might find somewhere else. I'd say , read up and choose on basis of what appeals to you most. You would not be disappointed w/either.