I will get NIT Raipur, Puducherry, Meghalaya, Mizoram, Manipur, Arunachal Pradesh, Srinagar and Sikkim. Which one should I join?

The answer to this question depends on your personal preferences and expectations from your college-to-be.

If you prioritize infrastructure, NIT Srinagar has one of the most beautiful campuses among all the NITs. On the other hand, NIT Puducherry has a better faculty than all your other options. 

Placement-wise, NIT Raipur has the best record among these colleges. However, the infrastructure and faculty of NIT Raipur are below average. But it is a good college for its sports facilities and senior-junior connections. There aren't any cases of ragging on its campus. Also, it offers better connectivity than the other NITs you’ve mentioned. 

As for the northeastern NITs that you have mentioned, most people don’t choose them. This is because of lesser connectivity and a lack of overall facilities at them. Their placements aren’t at par with the other NITs. Also, you’ll experience totally different weather and culture over there. So you might face difficulties in adjusting. 

Now the choice will also depend upon the branch you are offered at NIT Raipur, NIT Srinagar, and NIT Puducherry. If say, you are offered Biotech or Biomed at NIT Raipur and Civil at NIT Srinagar, without a doubt, go for the second option. Biotech and Biomed at NIT Raipur aren’t good choices.