Both Fiji and Tahiti make for dream holiday destinations. It would be hard to feel you've made a mistake visiting either. That being said, there are some differences between the two that can help you make a decision. Tahiti can be more expensive, particularly when it comes to accommodation. Tahiti offers more overwater bungalows, which are luxurious and particularly popular but can cost more. Fiji tends to be less commercialised and has more beaches with an intimate feel and has resorts perfect for families. Tahiti offers more in the way of scenery and dreamy landscape. Overall though, you can't go wrong with either.