I thought the water In Nassau was very pretty. But as far as everything else, I wasn't too thrilled or impressed. The locals are constantly nagging you to go on their excursions, and extremely pushy. I found that their souvenirs were priced excellent. I tried conch fritters for the first time and drank out of a cocoanut...awesome!
St. Maarten was a nice place, very clean. Did an island tour, the French were on a holiday so we didn't get to see too much. Our tour guide was kind of blah. We had a hard time staying awake and could barely hear her on her mic because it kept cutting out. St. Maarten is very expensive as well. I don't think I'd ever go back there.