It is not just KJ Somaiya, but every college you decide to go to, find out the following, especially for post-graduate studies:

• Qualifications of the professors in your college
• The crowd of the college and scope for securing internships on different topics
• If there is any research going on in the college and if so, how is the research cell? Many M. Tech students wish to do something new and collaborate with people having the same interests as well.
• Opinions of others about the college. When you interact with the students you will come to know what places are nice and where you can hang out

A friend of mine completed her M. Tech from KJ Somaiya and her experience was average. The research cell is not great and some teachers are well versed in their subject whereas others struggle with basic knowledge.

If you are concerned about placements, those are definitely improving over the years and this college will only be a good option for you if you are not looking for placements.