IIIT Allahabad is unquestionably superior to NIT Durgapur. But this isn't to say that NIT Durgapur isn't good. 

• If you want a career in ECE, don’t go for NIT Durgapur. ECE branch at NIT Durgapur does not have good reviews. 
• However, if you want to go for an MBA after your BTech, then NIT Durgapur can be a good option. 
• In the ICT sector, IIIT Allahabad holds a special position for ECE and this institute specializes in the IT sector. I have a few friends at the institute who vouches for the course. 

Here’s a brief comparison of the ECE branch at these two institutes.

Apart from that, just like NITD, IIIT Allahabad is an institute of national importance that is entirely funded by the Ministry of Human Resources Development. 

So, for ECE, IIIT Allahabad is definitely the better option.

My brother had the option of VIT for CSE on merit still he chose PEC metallurgy. There are various reasons as to why he took that decision:

• VIT is more expensive. Even if he had gone on merit, it would have cost him much more than PEC.
• Placements in core companies in ECE are negligible. You can sit for IT companies, but they pay less to ECE undergraduates than CSE counterparts.
• If you are a north Indian, culturally VIT might be different and might take time to adjust.
• Metallurgy is an undervalued branch in India; many of my seniors are pursuing MS from Germany, the United States, and France, and some have gone to IIMs and FMS with strong credentials.
• One of our seniors received a PPO of 15 lakhs, which is more than many students from elite branches.
• You can choose to upgrade, but you'll quickly realize that it's not that simple because the grading criteria favors those who are less deserving (no offense).
• Whether you accept it or not, those who claim that placement in metallurgy is poor (as it is in all branches except CS/IT) are correct. Placements in the core are hard to come by.
• Only 4000 people in GATE are from metallurgy, whereas there are 1.8 lakh from CSE and 2.1 lakh from Mechanical, implying that the probability of you getting a PSU is greater than that of a mechanical engineer.

I personally believe VIT is overrated because a friend who did not even pass mains received 2000 AIR in VITEEE. In the CBSE 2016 boards, he scored 78 percent, which was below average.