Every island is vastly different from every other island. My recommendation would be to go to Oahu, see Pearl, then leave Oahu and never look back. It's LA on an island... Not really paradise. Maui on the other hand is amazing. I go for at least a week every year. Kannapali/Kahana/Lahina is where I'd look to stay. If u have questions about Maui or Kauai PM me. Been to Big Island and Oahu, wasn't impressed.