Of the mega ships my favorite is the Bliss. On the middle-sized ships, I really like any of the Jewel class ships as well as the Dawn (not Jewel class). The Spirit was ok as was the POA. The ship at the bottom for me, was the Sky. We had been on the Sun and thought the Sky would be similar. Wrong. We are scheduled to do the Viva so I'm looking forward to checking her out. We've sailed NCL a great deal and the newest builds are the only ships in the new class that we haven't experienced.