Yes, IIM Ahmedabad is certainly better than IIM Bangalore and IIM Calcutta. Here are a few points to prove the same 

• IIM Ahmedabad is situated in an alcohol-deprived state called Gujarat and students face lesser distractions while IIM Bangalore is in the pub capital, and IIM Calcutta is in the city of ITC.
• The nearest airport to IIM Ahmedabad is just 30 minutes away thus providing great connectivity while the nearest airport to IIM Bangalore is 2 hours away and to IIM Calcutta is 1 hour away. 
• IIM Ahmedabad has a small and cozy 67-acre campus, with a beautifully maintained lawn while IIM Bangalore has a massive 100-acre campus and IIM Calcutta has a 135-acre campus, situated in the midst of a forest. 

Placements-wise, I deem all the IIMs to be somewhat similar with the same companies offering similar roles and packages to their students. 

It can thus be concluded that IIM Ahmedabad is better than IIM Bangalore or IIM Calcutta.

ISB Hyderabad is known for its lack of specialization in Finance. It’s a common understanding now that even if one is preferring ISB Hyderabad for admission, they know that they should go for anything but Finance. Studying some aspects will give you a deeper insight as to why MBA in Finance from ISB Hyderabad is not recommended.

Faculty: Although the visiting faculty is quite decent, it’s the domestic faculty that has ruined the culture at ISB. They are arrogant, pathetic, and extremely incapable. They insult the students regularly and disturb student-teacher relations.

Placements: The roles offered in Finance were below average like Operations, Sales, and BD roles. Such roles were offered in abundance by the banks or start-ups. However, the superior roles like IB/PE/VC/M&A/FP&A/Equity Research/Credit Rating/Asset Management/TAS were offered scarcely. For instance 

• only 10 FP and A roles were allotted that too only to CAs
• Only one Investment banking role was offered by Barclays
• Only 5 PE/bc roles were offered and there was a strong preference for a prior IB/PE/VC experience and IIT undergraduate background.
• One M and A role was offered only
• 4 Asset Management and zero Equity Research and Credit Rating roles were offered.

So the best roles were offered limitedly while the batch size stood at 900. Most students ended up with unsatisfactory placements. Now you can decide whether or not to join if you are confident to face the placement scenario.

IIML is clearly superior to MDI in non-marketing specializations in terms of placement. However, IIM I, K, and MDI are generally equal in terms of placements, except for a few banks that specifically seek out the IIM tag at I&K. If you work equally hard at either campus and all other operational factors are constant, you will likely end up in a similar position whether you choose MDI or I or K. However, as mentioned before, IIML still has the edge and requires more effort if you're in the finance or consulting field.

If you're interested in MDI, it's worth noting that recent placement reports show more and more prestigious finance and consulting companies are visiting the campus. This has helped MDI deliver well-rounded placements. So, if you're willing to put in the work, MDI could be a good option for you.