hello aspirant ,

Congrats on getting Electronic and Electrical as branches in these colleges .

As far as NIT nagaland And NIT mizoram are conisdered , They  both are very good colleges as placements , faculties and Infrastructures in both of these colleges is very good.

NIT nagaland is one of the most beautiful institutions of india. NIT Mizoram lies in beautiful side too.

If you ask me(only my opinion) , I would like to take NIT Mizoram in electrical branch as in this college the Infrastructure , faculties , placements , and side beauty are all beautiful and great . NIT nagaland is also good but not as good as NIT mizoram.

So it's upto you to decide which college you prefer the most.

You can check the college predictor tool to check other colleges based on your rank and percentile : https://engineering.careers360.com/jee-main-college-predictor?utm_source=qna&utm_medium=jee_cp

I hope this will help.