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