Hi
Kunal8769,
What is your GMAT / GRE score and quantum of full time work experience ? I am assuming its less than 5 years and hence you haven't mentioned the Exec progs of the IIMs. To be honest ISB and SPJIMR isn't a like to like comparison for multiple reasons beyond the program duration. While you categorically mentioned that you are looking for progs in India, unless you are eligible for the IIMs, unfortunately there is NO program that is at par with ISB. Having said that you can also explore near home MBA programs in Singapore such as NUS and NTU as well.
I am an ISB alum, CO15, and have been guiding applicants in their admission journeys for 8+ years now. Feel free to reach out in case you seek specific help.
Cheers and all the best !!