Decisions between Carnival Vista and Norwegian Escape

First of all, greetings from Puerto Rico. We are a family of four members (husband, me, and our two daughters 16 and 18). We love cruising with Royal Caribbean (Adventure, Oasis and Allure). Just one time in Carnival, an older cruise name Victory. And one time in Princess. This time, I need something on the cheaper side (or at least, less expensive) for May 2017. So, after hundreds of times watching and reading about Harmony of the Seas and Anthem of the Seas...I think I will have to make a decision between Carnival Vista and Norwegian Escape. Which one you think should be a better decision, based in your experiences and in the cost (and things included), food, entertainment, service, etc. Let me know, and I will be forever grateful!!!