I stayed at the IC Thalasso in an Overwater Bungalow. Can't compare it to the St Regis or 4 Seasons but that said, I wouldn't hesitate to recommend the Thalasso. If you go the IC route, I would look into purchasing Ambassador status or even better Royal Ambassador Status. You can purchase Ambassador status directly from IC but for RA status, you would need to look on someplace like ebay. I used a Tahiti based travel agency and got a much better rate that included breakfast & dinner than if I were to book everything on my own.