You can look out for these colleges. They are considered as the best as far placements are considered 

• IIM Trichy (approx 13 lakhs) 
• BIM Trichy (approx 10 lakhs) 
• Great Lakes Institute of management (approx 19 lakhs) 
• LIBA (approx 12 lakhs) 
• IFMR (approx 12 lakhs) 
• IIT Madras (approx 7 lakhs) 
• XIME Chennai (approx 10 lakhs) 
• SRM University (5 lakhs) 
• Hindustan University Chennai (approx 5 lakhs)