Which NIT should I prefer?

Hello candidate, your rank is quite good and it's possible that you might get a good nit but not good branch in them. Please check this link to know about colleges you can get-

https://www.google.com/url?sa=t&source=web&rct=j&url=https://engineering.careers360.com/jee-main-college-predictor&ved=2ahUKEwiv1f-u8_niAhVN4eAKHeaPA8MQFjABegQIBxAB&usg=AOvVaw1pTMu5LewXe0n3JPiA8V2U

Hope this helps you