See both the institutes you have mentioned are great in terms of infrastructure and academics. Now on the basis of placements conditions, I would recommend you to go for the Electronics and Telecommunications Engineering course over Metallurgy, because the placement rates are better for the course of ETE in IIIT Nagpur compared to that of NIT NAGPUR. Also the packages are better than that of that NIT Nagpur. So from a employability point of view it would be always better for you to go for the IIIT Nagpur.

To know more about IIIT Nagpur visit the link below:

https://www.careers360.com/university/indian-institute-of-information-technology-nagpur

To know more about VNIT Nagpur visit the link below:

https://www.careers360.com/university/visvesvaraya-national-institute-of-technology-nagpur

To know more about Electronics and Telecommunication Engineering visit the link below:

https://www.careers360.com/courses/electronics-and-telecommunications-engineering-course

To know more about Metallurgy visit the link below:

https://www.careers360.com/courses/metallurgical-engineering-course

I hope this answer helps. All the very best for your future endeavors!