Hi aspirant

Mtech can be much better if you are looking for job purpose .As the college is IIT ,there are ample number of placement opportunities.

When it comes to IIT kind of college there are lots of companies visiting every year .It will completely depend on you how much you are prepared for the placements.

Know more here: http://www.iitkgp.ac.in/student-placement

You can read reviews here at the bottom of the page: https://www.careers360.com/university/indian-institute-of-technology-kharagpur

As PHD/MS are research oriented and course duration is more so it will take time.If you will be prepared for placements you will definately get.

Taking admission at IIT is not difficult but maintaining your standard is much more important (in matter of studies).

Hope this was helpful