People from NIT and IITs should definitely get admission to IMI Delhi or IMT Ghaziabad. Unlike the general misconception that people from ivy graduate colleges should go for the top PG colleges also, IMT and IMI are rather good choices. If an Institute helps you to build your career then the brand value hardly matters.
I have seen many people who after graduation from NIT and IITs join IMI and are glad to do so. My brother completed his graduation from DTU Delhi and joined IMI for MBA and claims that he was able to learn so many new things in the first 6 months. One of my friends also joined IMI after completing his Engineering from NIT Uttarakhand.
So what I actually mean is people from NIT and IIT can definitely pursue their MBA from IMI and IMT and won’t regret this decision.