Hello Saivikas. For doing a masters in engineering, the first thing to be kept in mind is the research facilities, research publications and number of patents of the college, where you are applying. Moreover, your goals also matter while deciding the college. For instance, if you want a job after your masters, go with a college/institute which is more industry oriented. While if you want to continue in research after your masters, go with a college/institute which has more research exposure. Moreover, the faculty profile of the institute should also be kept in mind while applying.

So, whether you choose a IIT/NIT or an abroad institute, do the research of the institute with the points mentioned above in mind.

All the best.