Hey harsh Singh,

The top best NITs are,

1. NIT Trichurapalli

2. NIT warangal

3. NIT rourkela

4. NIT Surthakal

5. VNIT, Nagpur

And the main difference between NITs and IIT s are,

IIT and NIT can be counted in every aspect even if we talk about the subjects & courses offered by these institutes, you can see which one holds your desired subject And in terms of education standards IITs are far better than IITs