Hello Rajendra,
Amrita Vishwa Vidyapeetham University is comparitively a better option than VIT and SRM.
The quality of faculty,Faculty(permanent)-student ration,effective ways of learning and teaching,these all are spot on.The graduation outcomes,research programmes and the infrastructure as well are very efficient.
The second better option is VIT,which although is weaker in the above mentioned parameters than Amrita Vishwa Vidyapeetham University,but is more promising than SRM (based on the above parameters).