Clarity--between whitesands and BBbarn (I have stayed at both) I would definitely go with BB Barn and the breakfast that comes with is great. I have stayed there a few times and it feels like home.
I also like jambarney's suggestion of gatehouse villas--I love hanging out at Tony's hut--it is a great little bar in the sand with lots of character and Tony is such a good guy. I never stayed at Gatehouse but Tony showed me around and told me about it--it is on my list of spots to stay in the future. If you don't stay at Gatehouse, you should still check out Tony's hut for a drink--right next to Wavz--the big lot where various crafts and Niahs patties are located.