Is it worth joining IIM Sambalpur? I have converted IMT Ghaziabad and got a call from IIM Sambalpur. Would it be better than IMTG and IMI?

You should go for IIM Sambalpur, rather than IMT Ghaziabad or IMI. Here are some facts I have heard from my friends studying at these institutions - 

• You might get an equal placement at IMT G but IIM Sambalpur has its edge. 
• Also, in the long term prospect, you will get huge network access and tag which makes a huge difference in your career.
• Although, choosing IMTG will be a good choice as it has been 30 years since its establishment has a brand, alumni base. You will be well placed with above-average marks. 
• IMT G and IMI have their location advantage and IIM Sambalpur doesn’t. 
• Also, with the presence of so many IIMs, the IIM brand has diluted over the years. 
• But again choose wisely. As you know tag plays a major role and also IIM Sambalpur will grow eventually with time.

It will be better if you are working; then give the next shot rather than joining any of them. But my suggestion will be IIM Sambalpur if you want to enroll in this year itself.