Hello,

As per 2020 ranking of the options you have, first will be

1. NIT Trichy
2. NIT Surathkal
3. NIT Warangal
4. International Institute of Information Technology Bangalore

Now coming to branches, CS is preferred over all other branches, but before choosing CS because it is most preferred, go through the subjects of both the branches. And if CS subjects suits you, CS in NIT Surathkal is better option than EC in NIT Trichy.