It depends on how much you want to spend, and what demographic you are looking for (families, no kids, older people, etc). The best way to research it is to go on a travel site like Expedia, and search on cruises in Hawaii. Sites like Expedia will have multiple cruise lines. Then go on cruisecritic.com, and research the individual ships.
Some lines offer more activities than others. Many of the larger ships are basically floating amusement parks, with water slides, ice rinks, all sort of stuff. They appeal more to families and younger people. I like Celebrity. They don't have all that crap, but they have really good food, and interesting presentations and speakers.
And then there's price. The high end lines like Silversea, Seaborne, etc are often all inclusive (excursions, booze, etc), but they are pricey. Carnival is generally cheapest, RCL and NCL a bit more, and Celebrity and Princess a bit more.