How is IIT Guwahati in comparison to IIT Roorkee and NIT Trichy?

According to me, IIT Roorkee and IIT Guwahati are better choices than NIT Trichy. My preference is based on several reasons-

1. The learning experience at IIT Roorkee and IIT Guwahati is richer as compared to NIT Trichy.
2. As an IITian, you get to know a greater number of opportunities.
3. The research environment at IITs is richer and you will get involved in research work at an early stage of your undergraduate studies. Thus, if you are aiming for higher studies, IITs are a better option.
4. Placements depend on your stream. However, IITs offer better placement opportunities overall.
5. IITR and IITG have a larger alumni network to provide support and assistance. 

The above points are especially true for IITR and IITG as they are amongst the oldest and most renowned IITs. NIT Trichy is a well-renowned and excellent institution, however, IITR and IITG are better according to me.