How long do you plan to stay?
If you have time and money, try this:
http://www.aranui.com
With this trip, everything is included; you meet people, learn a lot about Polynesia, discover 3 of the 5 archipelagos (Society, Tuamotu and Marquisas)
Otherwise, my choice is Tahaa, accessible only by boat (can be a very short trip from Bora Bora or Raiatea)
From there, you can see Bora Bora. One of the best views.
And when you arrive on the little harbor, there is vanilla drying !! That smells so good !!!!
If you want more details, check my profile and send me a mail
Teva