NIT

Both of them are very good for B.Tech but when you go for top NITs then leave NIIT but once check out your branch profile in both the institutes and this will help you.

The cut-off keeps changing every year. Please check on the internet to see previous year's cut-off and make your decision.

If you have a rank below 10,000, you have a good chance of getting in NITT if branch isn't your main concern.

The cutoff keeps changing every year. Please look in the internet to see the cut offs of previous years and make your decision.

It's quite possible. Make sure that you give the option properly and have a good back up also.
All the best.

Yes, it does. There'll be a concession in the institute fee. The mess fee remains the same for anyone. This is for NITT.

Depends on what NIT you have a chance of getting in. If there's any possibility that you'd be getting a branch of your choice in NITT, NITK, NITW, NITC or VNIT, then you can go ahead with that. Otherwise, I'd suggest you to go for Long term coaching and try the best you can to get into one of the older IITs. All the best :)

Hello Kartikeya,
To get the top NITs , your rank should be atleast 4000-6000 if you belong to the general category. For general category, CRL (common rank list) will be considered.
if you belong to the other categories, then your category rank should be atleast below 2000.
for all these parameters, your score is JEE main exam should be atleast more than 300.