Hello aspirant,
Great to knew that according to previous cut-offs you have various options to choose from.
As your 1st priority is ECE I would discuss regarding this branch only on your mentioned NIT's.
As you may know, NIT Nagaland, Sikkim, Mizoram & Meghalaya were comparatively newly established, I would rate these NITs a bit lower than the other two NITs due to their lack of infrastructure and established alumni network. They are in their infant stages only, thus I would take them out of the discussion.
Now comes the other two NITs Agartala and Srinagar, while Srinagar was earlier an RIT and thus always was a premier institute of India. Agartala is also a fairly old institute established in the 50s and 60s. They have a very established campus and alumni network. NIT Agartala has many new investments in infrastructures.
I would suggest you to choose any of them according to your residence as if you were in East side you can choose NIT AGARTALA or if you belongs to Northern side choose NIT SRINAGAR.
To know your other chances through JOSSA & State level Government & private colleges, You can use the JEE Main College Predictor tool given below.
https://engineering.careers360.com/jee-main-college-predictor?icn=QnA&ici=qna_answer
Hope it helps you..
Best of luck..
Regular exam updates, QnA, Predictors, College Applications & E-books now on your Mobile