Hi Swaraj, 

Both of the colleges have excellent facilities and placement record. If you have a preference of staying in the city of Kolkata where the comfort of living is better than Haldia then Techno India would be a better option.

 For the genuine reviews of the both college you can go through with given below links:
Haldia Institute of Technology, Haldia
Techno India, SaltLake

Hope this helps,

All the best!