Hey Aspirant, 

JNTU Kakinada - Jawaharlal Nehru Technological University is a better option for M.Tech.

The placements are very good as it is the top engineering institution compared to other colleges you mentioned. Many MNC companies visit the campus for getting students hired. Nearly 95% of the students get placed in reputed companies. This year, highest salary offered was about 7.4 Lacs per annum and average salary is about 3.6 Lacs per annum. The lowest package offered is about 2.6 Lacs per annum. Some of the major recruiters are TCS, Wipro, Accenture, Tech Mahindra, Cognizant, Reliance etc. Some of the students had also completed the internship with an average stipend off 12000 rs. The placement cell is very effective and provides CRT training to students by reputed training organisations.

Hope this helps. Good luck!