Which cllg is best for cse between SRM university and amrita
See both are good. However most students prefer SRM Unversity. Basically the learning especially in CS is more on you. The college will teach what is in the curriculum. My advice woould be to check the curriculum and then check the college reviews. Alumni of the college are the best people to tell the reality.
However, the college will teach the curriculum. You have to learn the extras that are required to get the edge over the others. For that you should check job profiles, talk to seniors and then learn whatever language, technology is required to have the expertise that is needed.