Which Sandals property is better, Montego Bay or Dunn's River?

My fiance and I are planning to go to one of these two for our honeymoon and was wondering which of the two is better. Both of us are very active in sports and love the pool, beach, swim up bars, etc. However, we enjoy the night life, but not too much. We are in our mid 20's and are looking for a nice romantic gettaway. Which is best?