Rather than giving you a direct answer, I am going to evaluate all The aforementioned institutes individually on the basis of some common parameters like placements, brand name, campus life, opportunities, and alumni.
IIT BHU ECE
IIT Guwahati ECE
IIT Hyderabad Maths and Computing
IIIT Hyderabad CSE
Ultimately, it’s a matter of preferences and what you are looking for in your degree.