Both of them have done well in their respective fields and earned a lot of money. It depends on how you look at your future career. If you choose, you must do your best for it. When you become one of these two jobs, you will have prospects everywhere. My last suggestion is that you should do printing. While doing printing, you can take CTP as another object of your research, because the trend of printing industry in the future is all-round talents. Printing is difficult to learn, but it involves many things, such as color, machinery, and management as a captain. While studying printing, you can learn some CTP software operations in your spare time, such as Adobe Acrobat commonly used in CTP. Work hard and believe that you will succeed.