Nassau is the capital city of Bahamas and is located on New Providence Island. It's a popular tourist destination due to its lively atmosphere and many activities and attractions.
Paradise Island is home to the Atlantis Resort, which is one of the most popular tourist destinations in Bahamas. The resort has its own water park, casino, restaurants, and beaches.
So if you're looking for a Bahamas holiday with plenty of things to do, then Nassau is the better choice. However, if you're looking for a Bahamas holiday where you can just relax and enjoy the sun, then Paradise Island is the better choice.