Hello!

Nit Warangal is a better choice over nit Allahabad. As per nirf ranking of 2019 which based on: Teaching, Learning and Resources, Research and Professional Practices, Graduation Outcomes, Outreach and Inclusivity, and Perception,

Nit Warangal is ranked 26th and NIT allahabad is ranked 42nd. Also nit Warangal is a little ahead in terma of placements, quality of education and exposure.

So nit Warangal> nit Allahabad

You can the ranks here:

https://www.nirfindia.org/engg

I hope this helps.