Hey vineela,

 As compared to the ratings and reviews both the colleges are better,even you can cross check them for your confirmation,

While coming to Placements even both the college hold the same rank. For your better convinience you can check the college official webistes.

Here are the following colleges websites,

1.Gokaraju Rangaraju institute of engineering and technology:

http://www.griet.ac.in/

2.CVR Engineering college:

http://cvr.ac.in/home4/

Hope it helps.

All the best!!!