Which is the best MBA program(specialization)?

There is nothing as best in MBA . It depends upon your interest, as to what you find interesting and suits you the best. If we talk about most emerging MBA fields then core domain MBA programs like oil and gas management, Logistics Management, Port and Shipping, Aviation etc comes on the top. These

If I understood your question correctly, IIMs have consistently been rated among top institutes in India for several years now. Apart from IIMs, there is XLRI, FMS, SP Jain, MDI etc which have also been consistently rated among top institutes in India. Different institute has been rated differently