A Landscape Photographer's Dilemma: Should I Capture Locations or Unique Compositions?

It's 7:30 PM. Sunset begins in Marblehead and a full moon starts to rise, right over the cast iron skeletal structured lighthouse, built in 1896. I'm standing next to several other photographers at Fort Sewall -- a great vantage point to view the lighthouse from -- and we all have our lenses pointed in exactly the same direction. Same spot. Same composition.