10. Royal Caribbean International

Average Price: About $150 per day or less

FindTheBest calls Royal Caribbean International "The Innovative Ship." It has the biggest ships in the cruise industry and provides everything you would expect from a cruising experience: bumper cars, water slides and musical theater all onboard.

Young couples in their 20s and families with young kids tend to take this cruise line. It sails to the Caribbean, Hawaii and Mexico among other places.