Which Titanic films? Or just one?

The next question which I have to answer is do I focus on several films that are about Titanic or do I just focus on one?

Advantages of focusing on just one:
- more detailed analysis
- more focus on the director
- better evaluation as I only have one film to relate too (less confusing)

Advantages of focusing on more than one film:
- more general view
- more to talk about
- can cross reference films, talk about time differences

After looking at several different Titanic films I think it would be better if I focused on one film rather than several different ones. I have chosen the 1997 version as its the most famous and therefore brings in the debate of whether things are over-dramatised for dramatic effect and so make the film more interesting to audiences. It is also the version that James Cameron directed so I will be able to talk about his role in the creation and direction of this film.