JERIN, according to many students' experiences, you should choose FISAT over MITS.

FISAT has some very good research groups like CHPC, Robotics Cell, CAR, etc. Just go through the website and you can see them. The infrastructure, teachers, and all other facilities are good. Job placement and packages are good. 

Although it doesn't matter where you study. If you have good skills and an interest to work hard, your college will support you, and you will reach heights.

Still, I would suggest you yourself take a closer look at both these colleges and then decide for yourself.

For more information, you can refer to :- https://www.careers360.com/colleges/federal-institute-of-science-and-technology-ernakulam

Feel free to ask if you have any more queries.

Hope this helps!

All the best!