Ncl epic versus royal caribbean cruises?

I havent been on the Epic, but i haved cruised with NCL 3 times. I have also cruised with Princess once. NCL is freestyle cruising which means you can dine at what ever time you feel like. NCL has very good food, it is just like every other cruise, and amazing entertainment. I have heard the epic has a waterpark, ice bar, and many other cool features. The EPIC would be a very epic vacation. You can also see the deck plans and reviews at NCL.com and cruisecritic.com i hope you have a great cruising experience with whatever cruise you pick :)