Incase you secure certain rank in JEE Main/Advanced or KVPY for Undergraduate or GATE/JAM incase you are applying for Postgraduation, which grants you admission to either of IISc Bangalore or Top IISERs like Pune, Mohali, Kolkata. It is a no brainer to choose IISc Bangalore over any IISER. IISc Bangalore besides having a very strong recurring in terms of faculty, infrastructure, research facilities, employer outlook also has a very rich campus life and peer environment. Bangalore itself is a very vibrant city and is apt for a healthy college life. However, In case you do not make it to IISc Bangalore you may surely choose IISER Pune as your Go-To Institute.

For more information about IISc Bangalore do follow the link below

https://www.careers360.com/university/indian-institute-of-science-bangalore/amp

For more information about IISER Pune do follow the link below

https://www.careers360.com/university/indian-institute-of-science-education-and-research-pune