Which is the best job?

It highly depends on what you want and what skills do you have. Choosing a career can be a bit difficult. However, there are many ways to narrow down your choices. You might want to talk to some of your friends or relatives who already study or work in the areas that you are mostly interested in. Furthermore, you can take a look at this website. It tries to find a suitable career path that matches your skills and interests, using Artificial Intelligence. It also has information regarding current salary of different careers: