Which caribbean island should I go to next???

Question

I've been to st.maarten, anguilla, barbados and aruba and am trying to figure out where to go to next?

I didnt like st.maarten so much - it seemed compact and overcrowded. I loved anguilla and aruba A LOT:) and want to try somewhere new...I love places with beautiful pristine beaches and maybe some nice nature in the background. Any suggestions?