M.Sc

Best is a very subjective term. What is best for you may not be best for someone else. Look into what you like to be doing the rest of your life without getting bored. The industry, the job role, the location, the pay, the lifestyle, etc. If you get a decent job that promises to give you a handsome salary, exposure, good lifestyle and a balanced life, then you should go for a job, if not then it is advisable that you should first pursue M.Sc degree and then head-out to secure a job. In order to get an edge over your competitors, you can opt to pursue more specialised M.Sc courses, which would make you more employable right after completing your M.Sc degree. After the completion of this course, you can work in various areas which include both Science and non-Science fields that too in private and government.
The job opportunities available for you are not only great in terms of the salary package, but also a satisfying job experience. Still, it's better to figure out your interests. You can talk to professionals from various sectors and see what their career is like and make a decision. And the most important thing is what you want to do, because at the end of the day satisfaction matters. Success is no accident, it is hard work, perseverance, learning, studying, sacrifice, and most of all, love what you are doing or learning. You can either continue the same stream or go for MBA. But whatever you do give your 100% to it.
Join some elite institutes/universities:
D. Y. Patil University- Navi Mumbai
Jamia Hamdard University- Delhi
Lovely Professional University-Punjab
Tata Institute og Social Sciences-Mumbai
K. J. Somaiya Institute of Management Studies and Research
Management Development Institute - Gurgaon
Christ University - Bangalore