I just finished this capstone project. I feel like for great visualizations Seaborn and Pyplot are probably good enough, but they may be better for an interface which automates the generation of graphs. I will say I much prefer them to working with Excel for chart generation. I do like the different color palettes that are included, and I think I will continue to use them in some form or another in the future, especially if I have a lot of charts to make.
Please see the following dropbox link for my project files: