Choosing the college depends upon personal preference. If you have any skill for either of the subjects, go for it irrespective of the institute. Both of the institutes are good and will provide you with tremendous opportunities. 

The table shows a brief overview of the institutions.

However, if you don’t have a subject preference then here are few things that you should consider.

• Electronics as a specialization has got a booming market, which is demanded to create a lot of jobs presently.
• IIEST, becoming accredited with central status i.e Institute of National Importance, receives central government funding, as compared to state government funding for Jadavpur University. Therefore the infrastructure of IIEST is way better than Jadavpur University.
• IIEST now admits students from all over India, so you will get to interact with students from all over the country. This will boost your learning experience a lot.

Overall, if you need to decide between the given two choices then you should opt for Electronics at IIEST.