This was the 9th course in the series I completed and I found it the most fun. I also learned a tremendous amount that I have directly applied at work. The course project is much more flexible than the prior course projects and allows a student to develop a data product of their own choosing. This allows you to work on what you enjoy - I created a Linear Programming/Optimization data product. This is also a great opportunity to pull together tools you learned in the prior courses and helps integrate how to use R, how to get help, and how to "sell" a data product to your target audience.