I agree with RJP, Bonaire IS diving and on Curacao you can dive. I have only been to Curacao once, Bonaire 7 times. On the one Curacao trip we did one week in Curacao and then one week in Bonaire. For me, it was not near as comfortable on Curacao, bigger island, definitely more to do but it has stop lights! It was like a breath of fresh air to get back to Bonaire where it's small and quiet. It all depends on what you want and what feels right to you, for me it's Bonaire.