After experiencing the Allure you may find all other large ships lacking.
Even my preference for small luxury ships has been challenged with the Allure having dining, food and lack of crowds to challenge any of the top 5 out there. I don't know where the people go but 80% of the time we felt almost alone except at New Years when most of the 6 200 guests packed into the Promenade for a lively party.
Entertainment abounds and easily exceeds our ability to take it all in. From the aqua show, floor shows, flashmobs, walk a thons, parades, special interests, I have high praise. We found service to be excellent and food quality was not only good but outstanding in the specialty restaurant. Should note that '150 Central Park' enters our list of 10.best restaurants.