We've been to both.So far, we prefer St. Lucia because of the beauty . If you stay in Rodney Bay on St. Lucia, you have a multitude of choices for dining and is close to Gros Islet for the Friday night jump up. We rented a car and explored the island during the day which was really great! It is definitely more difficult to get around but it was worth it! To see the topography and the pitons, waterfalls, black sand beaches, etc.