All the colleges are same in terms of ratings. If you want to prefer one you can go for RVR and JC college as it has better placements.

You can also compare all the colleges from the given below link

RVR and JC College Ratings and Reviews

http://www.engineering.careers360.com/gudlavalleru-engineering-college-gudlavalleru/reviews

http://www.engineering.careers360.com/prasad-v-potluri-siddhartha-institute-technology-vijaywada/reviews