They both work very well. Choosing depends on what you like.
The director has more options and is much more advanced, the "New controller" is much more basic but you still have the "sunrise/sunset" effect.
If you like tinkering with your lights with your computer go with the director. If, you're like me who tries to avoid computers, New Controller.
Here is a great user video that walks you through the New Controller step by step…
https://www.youtube.com/watch?v=6QcxARtsiNg
Ray